Made Of 50% rPET, 50% Polyester With 100% Polyester Lining. Made From Post Consumer Recycled Materials. Recycled Polyester (rPET) is Obtained By Melting Down Existing Plastic Bottles And Other Material Sources To Create New Polyester Fiber. Trolley Sleeve Slides Over Luggage Handle. Hook & Loop Closure. Two Mesh Bottom Cup Holders. Fits Most Tumblers And Water Bottles. Two Back Slip Pockets For Phone, Charger, Sunglasses, Etc. Folds Flat For Easy Travel And Storage.