Did they update the SIHOO M18? : r/OfficeChairs

Frylr Ergonomic Home Office Desk Chair with Flip-up Arms and Headrest - Perfect for Big and Tall Users/Adjustable Lumbar Support/450 lbs Heavy Duty Office Chair（White/Black） : Home & Kitchen

Sihoo M76A Ergonomic Office Chair with Headrest

SIHOO M18 Classic Office Chair Review

Sihoo M18 Ergonomic Office Chair review: fantastic back support for those who need it - General Discussion Discussions on AppleInsider Forums

M18, SIHOO's high back ergonomic office chair, can more effectively support the back and head compared with low back office chairs and leather office chairs, while providing larger sitting area. The seat cushion is made of soft sponge to keep your hips comfortable. The backrest is made of high-stretch breathable mesh to avoid stuffiness. High quality is gauranteed with numerous tests.

SIHOO Ergonomic High Back Office Chair Adjustable Computer Desk Chair with Lumbar Support 300lb Orange

I bought Leap v2 (unknown year) for 250. How'd i do? : r/OfficeChairs

SIHOO M18 Ergonomic Office Chair for Big and Tall Brazil

Best Budget Chair for Gaming? - Sihoo M18 Review

I bought Leap v2 (unknown year) for 250. How'd i do? : r/OfficeChairs

Sihoo M102C Ergonomic Office Chair with Customizable Lumbar Support

sihoo s300 vs sihoo m18 : r/OfficeChairs

SIHOO Ergonomic High Back Office Chair Adjustable Computer Desk Chair with Lumbar Support 300lb Orange

SIHOO V1 Ergonomic Office Chair High Back Computer Desk Chair Office Chair

SIHOO M18 Ergonomic Office Chair for Big and Tall People Adjustable Headrest with 2D Armrest Lumbar Support and PU Wheels Swivel Tilt Function Orange : Office Products

SIHOO M57 Full Mesh Breathable Office Chair