Simply slide this one-pocket Seat Sack over a student's chair for quick, convenient, instant organization and storage of school materials. Elastic added across the entire back is designed for classrooms with a large range of chair backs and the hard-to-fit chairs that have measurements of 14" or less across the top of the back. Elastic helps to hold the seat pocket in place on the chair. Roomy storage pocket features a 2" gusset to expand for extra storage. Clear plastic sleeve holds a replaceable name tag. Machine-washable Seat Sack is made of a durable, premium, high-quality, poly/cotton laminated material that is sewn and backstitched. It is certified flame-resistant, CPSIA and Prop 65 and meets additional CA and EU standards. Use on chairs in the classroom, home office, library, music room, church, synagogue or anywhere extra storage space is needed. Set includes a name card for each Seat Sack.