Ultra-Compact Hydration for the Backcountry
Elevate your outdoor kitchen with the Sea to Summit Frontier Ultralight Collapsible Cup. Designed for those who prioritize weight and space without sacrificing durability, this sleek 355ml mug is the perfect companion for backcountry excursions and fast-and-light campouts.
Visual & Functional Excellence
Crafted from premium food-grade silicone, this cup features a smart collapsible design that shrinks to less than 2cm thick. The integrated glass-reinforced nylon rings not only provide a stable grip but also act as a heat shield to protect your fingertips while enjoying hot beverages.
- Ultralight & Packable: Weighs a mere 54g (1.9 oz) and fits easily into your pack or pocket.
- Premium Materials: BPA-free, food-grade silicone with a durable nylon 66 rim and base.
- Seamless Integration: Engineered to nest with other Frontier dinnerware and the 2L Pouring Pot.
- Built to Last: Backed by the Sea to Summit lifetime guarantee.
Specifications:
- Capacity: 355 ml / 12 fl oz
- Weight: 1.9 oz / 54 g
- Dimensions: 3.5 x 4 inches
- Material: 45% Glass-reinforced nylon, 55% Silicone
- Style: Collapsible Space-Saving Design

























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