

Mirai by Sitlosophy is the ideal solution for those seeking ergonomic task chairs designed to ensure comfort, functionality and long-lasting performance. Born from the combination of a soft seat—perfect for intensive daily use—and a traditional polypropylene backrest, Mirai offers a balanced mix of practicality and reliable support. Thanks to its solid structure and advanced mechanisms, this collection perfectly suits dynamic spaces for operational work, from open-plan offices to corporate environments.
Its clean and essential design is complemented by variants tailored to different aesthetic and functional needs. Among these, the version with black back and base represents the most classic and discreet option, ideal for blending seamlessly into any professional setting. Mirai is available in three sizes, with the largest combined with a headrest, turning it into a semi-executive chair for users who require superior comfort during long work sessions.
The collection includes versatile mechanisms such as the up-down backrest movement and the synchronized adjustment with seat slider, essential for achieving a personalized and ergonomically correct posture.
Weight: ± 230 g/mq
Composition: 100% PP polypropylene F.R.
Martindale: 80.000 cycles
Fire proof class 1IM

MD 515

MD 510

MD 502

MD 514

MD 511
Weight: ± 565 g/mq
Composition: 82% PVC – 7% Cotton – 11% Polyester
Martindale: 50.000 cycles

C 539

C 21

C 84

C 98

C 560
Weight: ± 228 g/mq
Composition: 100% polypropylene F.R.
Martindale: 100.000 cycles
Fire proof class 1IM

AN 38

AN 30

AN 35

AN 45

AN 20

AN 53

AN 50

AN 41

AN 09

AN 55

AN 39

AN 56

AN 57

AN 46

AN 14
Weight: ± 350 g/mq
Composition: 100% recycled polyester
Martindale: 100.000 cycles
Fire proof class 1IM

ON 4067

ON 1506

ON 7033

ON 2519

ON 3007

ON 3008

ON 7029

ON 7022

ON 4028

ON 6591

ON 6512

ON 6017

ON 8033
Weight: ± 640 g/mq
Composition: 87,5% Plasticized polyvynilchloride – 12,5% Cotton
Martindale: 50.000 cycles
Fire proof class 1IM

S 4979

S 6

S 151

S 1194

S 1307

S 71

S 792

S 680

S 726

S 1809

S 4947

S 6985

S 4009

S 1955

S 991
Weight: ± 300 g/mq
Composition: 100% Polyester Trevira CS
Martindale: 100.000 cycles
Fire proof class 1IM

KF 1006

KF 4030

KF 4066

KF 4008

KF 4020

KF 8027

KF 3083

KF 3030

KF 7015

KF 6026

KF 7023

KF 6007

KF 8009

KF 9228

KF 8033
Weight: ± 540 g/mq
Composition: 76% PVC – 2% PU – 22% PES
Martindale: 60.000 cycles
Features: waterproof, UV rays resistant, suitable for outdoor
Fire proof class 1IM

SC 1013

SC 1002

SC 1008

SC 1011

SC 1024

SC 1007

SC 1005

SC 1020

SC 1009

SC 1018

SC 1021

SC 1006

SC 1015

SC 1012

SC 1017
Weight: ± 340 g/mq
Composition: 100% Polyester Trevira CS
Martindale: 100.000 cycles
Fire proof class 1IM

MN 4028

MN 4528

MN 4530

MN 3008

MN 1006

MN 1014

MN 1020

MN 7022

MN 7007

MN 6502

MN 6004

MN 6015

MN 6524

MN 1014

MN 8033
100% post-consumer recycled polyester FR
60.000 martindale cycles
Flammability
CLASSE 1 IM – UNI 9175
BS 7176
EN 1021 – 1/2
California TB 117-2013
BS 5852 Crib 5
CA TB 117-2013
NFP 92-503/504/505 M1
DIN 4102 – B1
Fire proof class 1IM

CH 66172

CH 66171

CH 66174

CH 66189

CH 68193

CH 68195

CH 61172

CH 62086

CH 63099

CH 64201

CH 64198

CH 65107

CH 60114

CH 60116

CH 60999
Weight: ± 340 g/mq
Composition: 100% Trevira CS
Martindale: 100.000 cycles
Fire proof class 1IM

ST 61149

ST 68118

ST 68120

ST 68700

ST 68158

ST 62073

ST 65093

ST 67735

ST 67072

ST 65018

ST 64178

ST 64179

ST 64159

ST 60004

ST 60092
± 310 g/mq
100% Trevira CS
80.000 martindale cycles
Flammability
CLASSE 1 IM – UNI 9175
BS 7176
EN 1021 – 1/2
BS 5852 /2 – CRIB 5
California TB 117
Fire proof class 1IM

G 61138

G 60084

G 60083

G 68169

G 68168

G 68152

G 67071

G 66139

G 66134

G 64183

G 64175

G 64172

G 63080

G 61143

G 61139
Weight: ± 480 g/mq
Composition: 63% PU – 29% COT – 8% PES
Martindale: 150.000 cycles
Features: antibacterial protection
Fire proof class 1IM

X 1450

X 150

X 3650

X 4450

X 1950

X 1250

X 4050

X 2150

X 2750

X 250

X 3250

X 1150

X 950

X 4650

X 2250
± 660 g/mq
100% New Zealand wool
100.000 martindale cycles
100% recyclable fabric
Flammability
CLASSE 1 IM – UNI 9175
BS EN 1021 – 1/2
California TB 117-2013 ,
BS 5852 /1,
ASTM E 84 Class 2, ÖNORM A3800-B1-B3825-Q1 UK
Fire proof class 1IM

F 60211

F 60212

F 60999

F 61035

F 61036

F 61040

F 63133

F 64041

F 65032

F 66011

F 66020

F 66022

F 66023

F 68047

F 68048
± 615 g/mq
100% Trevira CS
Solid: 92% post-consumer recycled polyester/8% polyester
Duo-coloured: 80% post-consumer recycled polyester/20% polyester
100.000 martindale cycles
Flammability
EN 1021 – 1/2
California TB 117-2013

GR 66231

GR 66234

GR 66236

GR 68259

GR 60303

GR 60320

GR 60328

GR 61248

GR 61251

GR 61253

GR 62123

GR 63117

GR 63118

GR 64250

GR 64251

Black

Black polyurethane

Seat
Multilayer
Backrest
Reinforced polypropylene
Head-rest
Reinforced polypropylene, reclining and height-adjustable
Outer shell
Polypropylene
Padding
Polyurethane foam 4,5/4 cm thick, density 40/30 rc
Armrests
3D in polypropylene,height adjustable with rotating and sliding black PU pad or height adjustable in black or white polypropylene
Mechanism
MEC 8 A Self adjusting synchro with shock proof system MEC 9 Multi block synchro with shock proof system, side control lever, seat slider on TR version. Height-adjustable backrest by up-down action
Height adjustment
Gas pump (UNI 9084 Certified)
Castors
AR8 Polyamide ø50
Swivel base
B67 Black nylon B69 White nylon

P530D
P530D

P530DTR
P530DTR

P531D
P531D

P531DTR
P531DTR

P532D
P532D

P532DTR
P532DTR

BRN3/S
BRN3/S

BRN4/S
BRN4/S

GS4
GS4

A richiesta Normativa europea EN 1335
In this video section, you will find the mechanism tutorials for the Mirai collection, a range of ergonomic task chairs designed to provide support, comfort, and ease of use in any work setting. Each video clearly explains all available adjustment functions, helping you configure your chair properly and enhance well-being in modern workspaces.
Self-weight synchro mechanism MEC 8A
Synchro mechanism with seat slider MEC-09
The Mirai collection is designed to meet the needs of modern spaces for operational work, where comfort and efficiency are essential for user well-being. For this reason, Mirai integrates mechanisms engineered to support ergonomic posture throughout the entire day. The presence of adjustable height and tilt allows the chair to adapt to each user’s body type, preventing fatigue and enhancing productivity.
The synchronized mechanism with seat slider ensures smooth, natural movement, supporting the user in every inclination while maintaining proper lumbar support. Additionally, the up-down backrest adjustment allows for millimetric precision, ensuring optimal support and balanced weight distribution.
Mirai is also compliant with EN 1335 certified seating, a key European standard that guarantees ergonomic performance, safety and structural quality. This certification makes Mirai suitable for professional environments where formal requirements are mandatory, such as corporate offices, public institutions and administrative workspaces.
From an aesthetic perspective, Mirai offers the flexibility needed to fit into both contemporary and traditional interiors. The version with black back and base recalls the visual language of classic task chairs, while the larger variant with headrest becomes a semi-executive solution ideal for users seeking extra comfort.
Thanks to durable materials—including a polypropylene back that resists wear and ensures easy maintenance—Mirai is designed to remain efficient in high-usage environments. The soft seat adds an extra layer of comfort, perfect for work contexts requiring prolonged sitting.
Mirai stands out for its wide range of configurations, making it an excellent choice for companies, coworking spaces and professional studios. Thanks to its advanced mechanisms and the ability to integrate adjustable height and tilt, Mirai is a complete solution for any environment for operational work, where comfort and user support play a crucial role.
The three available sizes offer great modularity: the largest one, paired with a headrest, provides superior ergonomic support, making it ideal for managers, team leaders or anyone who spends many hours at the desk. The more compact versions are suitable for shared workstations, operational areas and administrative offices.
Its EN 1335 certification reinforces Mirai’s reliability, ensuring compliance with European ergonomic and safety standards. This is crucial not only for regulatory purposes, but also for preventing posture-related issues and improving daily comfort.
Mirai’s design, while inspired by traditional task chairs, integrates subtle contemporary elements that enhance the overall workspace aesthetics. The black back and base option appeals to those seeking a minimal and timeless style, while customizable upholstery options allow architects and designers to create cohesive visual concepts.
By combining ergonomic task chairs, high-level certifications, advanced adjustments and a clean functional design, Mirai emerges as a complete and long-lasting solution for modern workplaces.