BUILT Neoprene Sleeve for 13-inch MacBook Air, Graphite Grid BUILT Neoprene Sleeve for 13-inch MacBook Air, Graphite Grid Made of durable Neoprene (the wetsuit material) backed by a plush inner lining designed to safeguard the contents Easy-access zipper-free top opening, travels easily in bags Form-fitting design secures device in place Measures 10-2/10-inches by 14-4/10-inches by 4/10-inches