Sea to Summit Frontier UL Collapsible Cup | Bone White

The Sea to Summit Frontier UL Collapsible Cup | Puffin's Bill Orange is your reliable and indispensable companion in any adventure, from combat duty to lightweight backpacking trips. In field conditions, every gram of gear matters, and versatile items become essential. This ultralight collapsible cup is exactly that: it minimizes space in your backpack and unfolds in seconds when it’s time to rest or rehydrate.

The Sea to Summit Frontier UL Collapsible Cup is made from food-grade silicone and glass fiber–reinforced nylon. This combination makes it extremely flexible while remaining resistant to wear, high and low temperatures, and mechanical stress. The main advantage of this travel cup is its compactness: when folded, its thickness is less than 2 cm. You can easily store it in a chest pocket, tactical bag compartment, or even a small utility pouch.

The rigid nylon rim maintains the cup’s shape even when filled with boiling water and also protects your fingers from heat — this is especially important for military personnel and travelers who use the cup not only for drinks but also for soups or heated meals. The central ring provides additional stability and reliability, while the nylon base enhances durability when in contact with hot surfaces or sharp gear.

With a capacity of 355 ml, the cup is suitable for tea, coffee, isotonic drinks, or a small portion of food. All materials are BPA-free and meet strict environmental safety standards. The Frontier UL Collapsible Cup is easy to clean — simple water is enough in field conditions, or you can use a dishwasher at home.

The Sea to Summit brand has earned a strong reputation among travelers, military personnel, and outdoor professionals thanks to its innovation and quality. Everything they create is optimized for comfort, mobility, and durability.