Aluminum,Polyester QUALITY MATERIALS: Made with a strong, yet lightweight aluminum frame and polyester fabric with a large zippered compartment on the outside to hold your phone, money or wallet CONVENIENT SIZE: Basket unfolds and expands to approximately 26.5 quarts of volume, measures approximately 17 x 10 x 9 inches (Not including 8.5 inches tall handle) MULTIFUNCTIONAL: The perfect solution for groceries, farmers market produce, picnics, gardening supplies, knitting yarn or toys EASY STORAGE: Folding it up and storing it couldn’t be simpler, just flatten and fold it in half for space-saving convenience; Easily fits in your backpack, and car trunk; Folded basket measures approximately 11.5 x 9.3 x 3.5 inches EASY CLEAN: Spot clean when needed and let air dry