Pure Silk. Purchased New from SLIP and used for one flight, but I’m pretty petite and it wasn’t a good fit. The silk case is removable for washing. Perfect condition with no tares or stains. Includes 1 x travel pillow with portofino pure silk removable pillowcase (9.8” x 9.8” x 4.9” / 25cm x 25cm x 12.5cm) | Hook and loop fastener made with 100% nylon and filler 100% polyurethane | 1 x reusable TPU carry bag made with 100% polyurethane with handles made with 100% polyester