Description The Frontier Ultralight Collapsible Cup is sleek, ultralight and as packable as ever. Building on over a decade of experience in collapsible drinkware, the Frontier Collapsible Cup has been engineered to be sleeker, more ergonomic and lighter. Glass reinforced nylon 66 is used for the base, rim and center ring providing more stability and allowing you to grip the cup more easily. EU food grade silicone rubber sidewalls let the cup shrink down to less than 2cm in height. Designed to nest/stack, these cups really do fit in anywhere… Sea to Summit Frontier Ultralight Collapsible Cup Features Collapses flat to less than 2cm thick – Frontier Cups fit into your pocket (and fit your lifestyle) Made from BPA-free, food-grade silicone, with nylon rings to maintain shape and shield fingertips from heat Base, rim and center ring made of light-yet-durable glass-reinforced nylon 66 Weighing a mere 54g, this 400ml, space-saving cup takes lightweight functionality to a new level Nests with other Frontier Dinnerware and the 2L Pouring Pot Sea to Summit Guarantee is offered for the Lifetime of this product SPECIFICATIONS Best Use: Hiking Material: Glas-reinforced nylon, food grade silicone rubber Dimensions: 10.1 x 10.1 x 8.8 cms Depth: 8.8 cms Volume: 400 ml Weight: 53 g FAQ’s Are Frontier cups microwave safe? Frontier Cups should not be used in a microwave Do the cups insulate? Not really. The silicone rubber sidewalls reduce heat transfer, but not anything like a double-walled rigid stainless steel mug Are the collapsible cups fragile? No! The base and rim are made of really strong glass-reinforced nylon; bowls are tested on a rig that extends and collapses each item 5,000 times Is Frontier tableware dishwasher safe? Yes – Frontier tableware can be washed in a dishwasher TECHNOLOGY FOOD GRADE HEAT RESISTANT SILICONE The heat-resistant silicone used in Frontier and Detour dinnerware is certified to both EU and FDA food grade standards, signifying very low absorption of external materials. It is also heat resistant to 300ºF/150°C and doesn’t crack in cold temperatures. The heat-resistant silicone used in Frontier and Detour cookware is similarly EU and FDA food grade certified, is heat resistant to 440ºF/225°C and doesn’t crack in the cold. NESTING Our Detour Collection is designed to be nested together for compact, rattle-free storage. Our Frontier and Passage Collection is designed to nest inside Frontier Cookware for space-saving packability. ERGONOMIC The handles, lids and catches of our kitchenware fit nicely in your hand for comfort and balance and are smooth and easy to operate. Utensils are shaped to harmonise with the curves of our pots, bowls and plates.