The SAB-1 is an economical solution for helping to absorb reflected sound over tough to cover spaces like doors and windows. These bleed-proof blankets are constructed of pre-consumer cotton batting/filler with a durable polyester binding and zig-zag reinforced double-lock stitching to resist tears and hold the cushioning in place. Not only an amazingly affordable alternative to sound dampening in rehearsal and recording studios these blankets are also a cost effective way to protect studio gear and furniture when changing sets, great for an easy glide on your studio floor and they can help prevent scratches and scuff marks when moving costly equipment. Top professional quality at a super-saver price! Weight: 5.5 lbs. (Colors and Patterns may vary)