The Cascade Rescue Chair Lift Evacuator Seat is the best all around T style evac seat available. Constructed of heavy duty square tube steel coated with our specially formulated Grip Textured powder coating. All stress points are double welded to ensure No Failures during operation. A low stretch KMIII rope harness is attached to the top loop to secure under the evacuees arms. Textured Cryogenic Polyethylene Seat resists the most severe conditions.