What if all you had to do was sit? And your chair provided ideal ergonomic positioning by adapting itself to your weight, size, and working position? Introducing Sum, an office chair that's more than just comfortable, but automatically creates a perfect seating fit and posture for 90% of human shapes and sizes.

Dimensions: 

• Width: 25 3/4"
• Depth: 25"
• Height: 40-45"

Features:

• Height adjustable seat
• Height Adjustable arms
• Tilt tension control

Finishes:

• Material: Fabric
• Color: Black