Description A BPA-free and ultra lightweight collapsible cup ideal for camping. The Frontier Cup's flexible silicone walls collapse easily, making it a pocket-sized drinking cup you can take anywhere. The rigid rim maintains its shape and is heat resistant for your safety and peace of mind. FEATURES Nests into Frontier 2L collapsible pot Collapses flat to 17mm for compact packing BPA-free, food-grade, heat resistant, flexible silicone sides Nylon rings at the top, middle and base maintain shape and prevent fingertips from being scalded BEST USE: Backpacking & Camping VOLUME: 14 fl oz | 400 ml WEIGHT: 1.8 oz | 110 g MATERIAL(S): Flexible food grade silicone walls & nylon 66 base