The new Evergreen SI Belt delivers the quality of design and durability that you've come to expect from Aspen. Durable two-ply construction with breathable mesh fabric makes the Evergreen SI comfortable for extended wear. Two easy-to-locate pull tabs provide maximum compression without the spinal rotation that can occur with a single pull tab system. Utilizes Aspen's proven SlickTrack mechanically advantaged tightening system. Easy to pull regardless of patient strength. Silicone strips on the inside of the brace hold fast and prevent migration especially while moving and sitting.