Made from durable Neoprene ;Designed to hold one standard 750mL (1L) wine bottle; Neoprene fabric insulates wine bottles up to four hours (time varies depending on external temperatures) and keeps them from clinking against each other; Folds flat for easy storage; Soft-grip handles for easy carry; Stain resistant Machine wash cold Drip dry; Recommend hand washing all imprinted products ; The interior color of BUILT® and BYO® items may vary The color of the BUILT® and BYO® logos may vary BUILT retail tags are removed prior to decoration and not reattached; United States Patent US 7,467,729 B2; Product Size: 6.5″ w x 16″ h x 0.5″ d;