Purl is an office/conference chair in sophisticated tech style featuring a knit material of proprietary design which conforms to each user's body shape for optimal comfort. It�s available in 17 colours. The seat upholstery can be specified in standard fabrics and leathers or in COM or COL. The five-star aluminum base with casters comes in black or silver epoxy or polished finish. Both Mid-Back and High-Back Purls are offered in Swivel/Tilt, Knee/Tilt or Fixed Height, Swivel/Tilt options. Source International provides lifetime structural warranty for all its products.