100% Polyester Fits most standard breast pumps, the bag has Structured bottom with luggage feet and Metal Hardware. Light staging/changing pad included, Detachable and adjustable messenger strap has removable memory foam shoulder pad Front mommy pocket holds keys (stretch key fob) and sunglasses (cleans lenses too!) with plenty of room for more. Inside organization includes 4 mesh pockets, 2 zippered pockets, & lots of wide open space! Did you spill anything on the bag, no problem this bag is Machine Washable, just don’t forget to air dry. The perfect size to carry plenty, Dimensions 15”L x 6.5”W x 11.5”H The largest bag in our pumping lineup, the Be Pumped is the Be Prepared of the pumping world, This beauty fits your pump and our host of included goodies, all while leaving plenty of space for other essentials. Long days away are no problem with the included Mini bottle cooler, which stores up to four 5 oz. bottles. And don’t forget the small Be Dry wet bag for pump parts and a staging/changing pad to ensure a clean pumping surface. Fun features include two interior mesh pockets and a zippered pocket, luggage feet for cleanliness, an outside Mommy Pocket and a dedicated pumping pocket. Adorned in a few of Ju-Ju-Be’s finest prints, no one will guess you are carrying a pumping bag. So, whether you are out for work or play, you’ll have confidence that you can pump in safety and style