Water-resistant Polyester to Keep Wardrobe Protected Double Spinner Wheels for Smooth Mobility (Carry-On) Under Seater with Designated Laptop Compartment Expandability for Maximum Packing Space (Carry-On) op Lid Opening The carry-on features a top lid opening that saves space and creates a drawer away from home. The interior includes elastic tie-down straps, a large mesh zip pocket, and a fly pocket. Carry On and Underseater Double Spinner Wheels The carry-on includes durable double spinner wheels that create a lasting smooth ride. Expandable Expandable The carry-on is expandable to allow for maximum packing space. Water Resistant Water-Resistant The Carry-On and Underseather are made from 100% polyester fabric with a water-resistant coating to protect your belongings.