SEAT SACK 17 in. Classroom Pack-Multi Color Chair Pocket Seat Sack Classroom Organizer Slide on the back of a chair to provide storage at home, school or the office. Creates instant personal storage. Use to hold books, papers, school supplies and more. Sturdy easy to clean poly/cotton laminated fabric. Chairs stack easily without having to remove the Seat Sack. Seat Sack has a 2&#034; gusset to provide plenty of storage. Machine washable on a warm gentle cycle and tumble dry on low. CPSIA tested. Fabric meets Standard for Flammability test 16CFR1500.44.