Seat Sack with elastic back is designed for teachers with multiple sized chairs in their classroom. It fits 12 to 17 inch chairs and features a durable cotton and poly laminated fabric construction. It is flame-resistant and easy to clean with convenient machine washable materials. The Seat Sack was created with a 10 inch deep pocket and has a 2 inch gusset that offers ample storage space to accommodate books, papers, school supplies and more. Includes: 1 Seat Sack Classroom organizer slides onto the back of a chair to create instant storage Fits chairs that measure 14 inches or less across the very top of the back Additional sizes available (See Sizing Chart) Desk organizer is made of a machine washable, durable poly/cotton laminated fabric High quality, easy to use chair pocket aides in classroom management Certified Flame-Resistant Features a clear pocket to slide in the removeable name card Seat Sack Model No: 60101 Orange Brand: Seat Sack