SINC Air
For users who naturally prefer a slightly reclined position during home-office work, meetings, browsing, reading and casual gaming.
SINC Air, SINC Lite, SINC, SINC 2 and UltraSinc belong to the same movement-focused chair family—but they do not provide the same sitting experience.
Compare their sitting character, lumbar-support style, adjustment level, body-fit direction and ideal use before deciding which model deserves a place on your shortlist.
Important fitting note: Recommended height ranges and technical specifications can help you shortlist a chair, but they cannot guarantee a correct fit.
Seat depth, thigh length, torso length, lumbar position, shoulder width, armrest range and headrest-to-neck reach should still be checked against your body.
Begin with the way you naturally sit—not with the price or number of adjustment labels.
For users who naturally prefer a slightly reclined position during home-office work, meetings, browsing, reading and casual gaming.
For users seeking the most accessible work-oriented entry into Niture’s Smart-Glide movement system.
For users who want an all-round balance between focused work, movement, posture changes and supported recline.
For users who prefer stronger lower-back contact and a more upright, support-focused working character.
For users seeking Niture’s most complete combination of adjustment, premium materials, movement and recovery support.
There is no universally best SINC model. The correct choice is the model whose seat, lumbar system, backrest, armrests and headrest align most naturally with your body and preferred way of sitting.
A conventional recline mechanism mainly changes the overall sitting angle. Smart-Glide adds a separate layer of backrest movement designed to remain more connected to your body as your posture changes.
The backrest is designed to remain closer as the user moves between upright sitting, leaning and recline.
Move between focused work, light recline and recovery positions with less interruption to the support relationship.
You may not need to repeatedly push your body backwards simply to reconnect with the chair’s back support.
The chair recognises that real desk work includes leaning, shifting, reclining and returning—not one fixed posture.
Smart-Glide does not mean every SINC model feels the same. The mechanism works together with each model’s lumbar structure, backrest shape, armrests, sitting angle and adjustment range.
The clearest way to understand the family is to compare how each model positions and supports the body.
Lifestyle-focused, lighter and naturally more reclined.
Accessible, work-oriented and movement-supportive.
The central all-rounder for work, movement and recline.
Stronger lower-back contact and a support-focused character.
Premium full-body adjustment, coordination and refinement.
Use this table to narrow your options before examining each chair in more detail.
| Model | Best Suited For | Sitting Character | Main Difference | Recommended Height | Maximum Load |
|---|---|---|---|---|---|
| SINC Air | Relaxed home-office and lifestyle use | More reclined, light and flexible | Relaxed Smart-Glide experience with synchronized arm support | Approx. 160–185 cm | Up to 110 kg |
| SINC Lite | First serious ergonomic upgrade | Practical, work-oriented and movement-supportive | Essential Smart-Glide support at a more accessible entry point | Approx. 155–190 cm | Up to 130 kg |
| SINC | Work, posture changes and supported recline | Balanced and versatile | Core all-round model of the SINC family | Approx. 150–190 cm | Up to 130 kg |
| SINC 2 | Focused work and stronger lumbar control | More upright and support-focused | Twin Dynamic Lumbar Support with more noticeable contact | Approx. 150–190 cm | Up to 130 kg |
| UltraSinc | Premium long-hour work and movement | Highly adjustable and refined | Flagship materials, synchronized arms and complete support tuning | Approx. 155–190 cm | Up to 130 kg |
On mobile, swipe horizontally to view all comparison columns.
Height is only a starting point. A person within the stated range can still experience poor fit if the seat depth, lumbar position or headrest reach does not match their body proportions.
SINC Air is designed for people who do not naturally remain in a strongly upright task position throughout the day.
Its sitting character is more relaxed and slightly reclined. This makes it suitable for home-office work, online meetings, reading, browsing, content viewing, casual gaming and mixed work-and-relaxation use.
SINC Lite is the most accessible work-oriented entry into the SINC Series.
It is designed for users who want meaningful movement support and adjustable body contact without paying for the widest adjustment range or most premium construction in the family.
Smart-Glide backrest movement works with synchronized recline to support changing sitting positions.
Sliding seat depth and four-level backrest adjustment help match different leg and torso proportions.
Neck-focused head support and flexible 6D armrests serve work, study, gaming and recline.
SINC sits at the centre of the family, balancing focused work, posture changes, natural movement and supported recline.
It is the safest starting point for many users who want one chair to cover work, meetings, study, gaming and recovery without leaning too strongly towards an upright or relaxed sitting character.
Use a practical working position for typing, writing, meetings and detailed desk tasks.
Shift position or lean back while Smart-Glide helps maintain closer support.
Recline briefly, vary pressure points and move the shoulders and hips out of the working position.
Move back towards the desk without completely resetting the chair.
SINC 2 is designed for users who want more noticeable lower-back support than the balanced standard SINC.
Its Twin Dynamic Lumbar Support uses two support sections that meet the lower back from both sides, creating a more defined and embracing contact pattern around the lumbar area.
Two lower-back sections respond independently instead of relying on one broad, flat central surface.
Tune the support for gentler contact or a more noticeable lower-back presence.
The backrest remains movement-supportive when the user changes posture or reclines.
The strongest setting is not automatically the best setting. The lumbar system should meet the natural lower-back curve without pushing the pelvis forward or producing uncomfortable pressure.
UltraSinc is designed for users who want Niture’s most complete combination of movement, adjustment, premium material expression and recovery-focused support.
It is not built around the idea that the user should remain in one perfect posture. Its main support systems are designed to coordinate across work, movement, recline and short recovery periods.
Smart-Glide, synchronized recline and synchronized arm support work together as the sitting angle changes.
Adjust lumbar response, upper-back support, neck position, arm support and seat depth.
Wintex Mesh, polished aluminium structural finishing and a padded retractable footrest create the flagship experience.
Different work patterns place different demands on the seat, lumbar system, armrests and recline mechanism.
Start with SINC Lite, SINC or SINC 2. Choose between practical support, balanced versatility and stronger lumbar contact.
Start with SINC Air or SINC. SINC Air is more relaxed; SINC is better balanced for substantial focused desk work.
Start with SINC, SINC 2 or UltraSinc, depending on whether you prefer balanced, lumbar-focused or flagship support.
Start with SINC Lite or SINC for adjustable seat fit, upper-body support and movement between work and recline.
Start with SINC Air, SINC or UltraSinc, depending on whether you favour relaxed sitting, balance or premium adjustment.
Start with SINC or UltraSinc, but test every intended user separately before making the final decision.
Lumbar support should meet the natural curve of the lower back without forcing the pelvis forward or creating concentrated pressure.
Adjustable lumbar intensity with adaptive or more stable support modes inside a more relaxed chair.
Adjustable lumbar depth combined with backrest-height adjustment for more accurate positioning.
Responsive adaptive lower-back contact for users who do not want an excessively specialised support feel.
Twin Dynamic Lumbar Support for more defined and noticeable contact around the lower back.
Adaptive or fixed lumbar response supported by additional upper-back adjustment.
Do not choose lumbar support from photographs alone. Two systems can appear similar but feel completely different once adjusted against your body.
Two people with the same overall height can have very different thigh, lower-leg, torso, shoulder, lumbar and neck proportions.
Your feet should rest securely on the floor or a suitable foot support, without excessive pressure beneath the thighs.
The seat should support a useful portion of the thighs while leaving suitable clearance behind the knees.
The lumbar structure should meet the natural lower-back curve—not the pelvis or middle of the back.
The armrests should support the forearms without lifting the shoulders or forcing the elbows too far outwards.
The headrest should reach the neck curve during recline instead of merely pushing against the back of the skull.
A headrest is most useful when it can meet the neck below the skull during recline without forcing the head forward during focused work.
The support reaches only the back of the head and misses the neck curve.
The headrest pushes the head forward during upright or focused sitting.
The user must extend the neck backwards before making contact with the support.
Headrest fit depends heavily on torso length. Adjust the seat, backrest and sitting angle before deciding whether a headrest truly fits your body.
A strong lumbar system cannot compensate for a seat that is too deep. Comfortable back support also cannot fully solve armrests that fail to align with the user and desk.
SINC Air uses synchronized 5D Dual-Axis arm support. UltraSinc uses synchronized 6D Dual-Axis arm support. SINC Lite, SINC and SINC 2 provide flexible multi-directional arm positioning for different activities.
More adjustment directions matter only when they allow the armrests to reach a suitable position for your body and workspace.
Mesh names are useful product information, but they cannot fully explain how a chair will feel after it is adjusted and loaded by a real body.
Sit in each shortlisted model for more than a few seconds. Adjust the seat and backrest correctly, then test both working and reclined positions before judging the material.
UltraSinc is the flagship, but another sitting character may fit your body and habits more naturally.
A recommended height range cannot guarantee suitable seat depth, lumbar alignment or headrest reach.
Excessive lower-back pressure can be as unsuitable as insufficient support.
Test typing, mouse work, phone use, light recline and deeper lean-back positions.
A supportive chair does not remove the need to stand, walk, stretch and change position.
Choose it for relaxed, breathable and naturally more reclined lifestyle sitting.
Choose it for the most accessible work-oriented Smart-Glide experience.
Choose it for the best all-round balance between work, movement and supported recline.
Choose it for stronger lower-back contact and a more support-focused sitting character.
Choose it for Niture’s most complete premium adjustment and movement experience.
Specifications can be compared. Features can be counted. But the final decision should be made through the relationship between your body and the chair.
Sit in SINC Air, SINC Lite, SINC, SINC 2 and UltraSinc in the same environment.
Review seat depth, lumbar position, backrest height, shoulder support, armrest range and headrest reach.
Compare upright desktop use, laptop use, phone replies, recline, gaming positions and footrest recovery.
General fitting: Free walk-in service
Typical duration: Approximately 30 minutes
Operating hours: Daily, 11:00 AM–5:00 PM
Check public-holiday operating status before travelling.
Clear answers for users comparing SINC Air, SINC Lite, SINC, SINC 2 and UltraSinc.
The main difference is their sitting character and support emphasis. SINC Air is more relaxed, SINC Lite is the accessible work-oriented entry model, SINC is the balanced all-rounder, SINC 2 provides stronger lumbar contact, and UltraSinc provides the most complete premium adjustment package.
Yes. Smart-Glide movement support is the shared concept of these current SINC models, although it works with different backrest, lumbar, armrest and recline systems.
SINC, SINC 2 and UltraSinc are the main starting points for demanding long-hour use. SINC offers balanced support, SINC 2 provides stronger lumbar emphasis, and UltraSinc provides the most complete support package.
Suitability still depends on body fit, correct adjustment, work pattern and regular movement breaks.
SINC 2 is the most support-focused starting point for users who prefer stronger lower-back contact. SINC Lite and SINC should also be compared when a gentler or more balanced support character is preferred.
SINC Air is designed for a more relaxed and naturally reclined sitting character. SINC may be more suitable when the user also performs substantial focused desk work.
SINC Lite provides the essential Smart-Glide experience at a more accessible entry point. SINC is the fuller core model, with a more balanced work, movement and recline experience.
SINC is the more balanced all-rounder. SINC 2 places greater emphasis on lower-back contact and a more upright, support-focused working character.
SINC provides the core balanced Smart-Glide experience. UltraSinc adds premium materials, synchronized 6D arm support, forward-tiltable upper-back support and more complete support tuning.
Not exactly. SINC Air is a lifestyle-focused model with a more relaxed sitting angle, synchronized 5D arm support and a 110 kg maximum load. SINC Lite is the clearer entry point for users seeking a work-oriented SINC experience.
SINC and SINC 2 have general recommended ranges beginning at approximately 150 cm. Shorter users must still check minimum seat height, seat depth, lumbar position and headrest reach.
SINC 2 is positioned as the back-support specialist, using Twin Dynamic Lumbar Support and adjustable lower-back contact.
The strongest support setting is not automatically the most suitable setting.
Footrest availability can vary by model and selected product configuration. Check the chosen variation before purchasing.
An ergonomic chair can improve adjustability, support and comfort, but it should not be presented as medical treatment or a guaranteed way to prevent pain.
Persistent, severe or worsening symptoms should be assessed by a qualified healthcare professional.
Yes, whenever possible. A showroom trial allows you to evaluate seat depth, lumbar position, headrest reach, mesh feel, armrest range and recline behaviour against your actual body proportions.
The Niture SINC Series is not a simple good-better-best ladder. It is a family of movement-supportive chairs designed around different bodies, work patterns and support preferences.
SINC Air is the relaxed lifestyle model.
SINC Lite is the practical and accessible Smart-Glide entry point.
SINC is the balanced all-rounder.
SINC 2 is the stronger lower-back support specialist.
UltraSinc is the flagship model for premium adjustment and coordinated movement.
Begin with your daily activities and preferred sitting character. Then check how your feet, thighs, lower back, shoulders, arms and neck meet the chair.
Learn why users of the same height may require different seat depths, lumbar positions and headrest ranges.
Read the body-proportion guide → Seat FitCheck thigh support, knee clearance and the relationship between the seat and lower-back contact.
Read the seat-depth guide → Neck FitUnderstand how height, reach and angle affect the neck during upright and reclined use.
Read the headrest guide → Long SittingCompare support, movement, pressure distribution and work habits for extended desk use.
Read the long-sitting guide → ShowroomSee what Niture checks during a free fitting and compare current chair models in person.
Learn about chair fitting → Main GuideCompare support systems, body fit, chair categories and selection principles across the wider Niture range.
Read the complete buying guide →