Drawing on more than ten years of expertise in collapsible drinkware, the Frontier collapsible cup has been redesigned to be slimmer, more ergonomic, and lighter. The base, rim, and center ring are made from glass-reinforced nylon 66, offering enhanced stability and making the cup easier to grip. The EU food-grade silicone rubber sidewalls allow the cup to collapse to less than 2cm in height. Crafted to nest and stack, these cups are designed to fit just about anywhere. Frontier Ultralight Collapsible Cup Fits in your pocket, collapsing flat to less than 2cm thick Made from BPA-free, food-grade silicone Nylon rings maintain shape and shield fingertips from heat Nests with other Frontier dinnerware TECH SPECS Weight: 53g Volume: 400ml Depth: 8.8cm Dimensions: 10.1 x 10.1 x 8.8 cm Material: Glass-reinforced nylon and food-grade silicone rubber