Our elastic-back chair pockets will assist with hard-to-fit, ergonomic back and larger size chairs. Our products are sewn and back stitched for extra durability and all have a roomy storage pocket with a 2" gusset to expand for extra storage. A clear plastic sleeve on each Seat Sack holds a replaceable name tag so your chair pockets are an economical investment for your classroom that can be used year after year. Series Name: The Original Seat Sack; Color(s): Black; Color Family: Black; Material(s): Poly/Cotton Laminated.