Invacare Flo-tech Evo Backs – Lightweight two point Back Systems. There are two backrests in the Evo back range: the Evo and the FB1 Evo. The Evo is a lightweight mesh back, anatomically shaped to incorporate a lumbar support. The FB1 Evo back, based on the highly successful FB1 back cushion, is padded and includes a removable visco lumbar support to provide additional comfort. Both backrests can be positioned at different heights and are angle adjustable allowing bespoke positioning for maximum comfort and stability. Using a 2 point fixture system, Evo Backs can be quickly and easily removed for stowage in a vehicle. The backrests can be fitted with a headrest and shoulder pad for added comfort and support. The backrests come complete with our latest two way stretch Spacer cover material.