Very resistant vinyl fabric, easy to clean. 1.5 pounds foam. Long lasting and durable will not lose its shape. Sewn with no zip fastenings to avoid injuring children. Embroidered stitching seals tunnel and prevents children from getting inside. Very strong fabric support stitched all around with extra strong nylon thread. Covering does not lead to friction burns. Vinyl cover is easy to clean with a soft cloth and cold soapy water. Made with vinyl covers. Tunnel measures 31.5"L x 23.5"W x 23.5"H. Phthalate free. Ages 3 and up.