Sea to Summit Frontier Ultralight Collapsible Cups

Drink straight from the stream

The Sea to Summit Frontier Collapsible Cup is a full-size drinking cup that flattens to just 17mm and weighs 53g. The food-grade silicone walls concertina down under a rigid nylon rim. They spring back to a stable 400ml cup the moment you need a drink. It is BPA-free and heat resistant, built to be carried anywhere and used hard.

Features

• Collapses flat to 17mm, so it slips into a vest pocket or the top of a pack without stealing space
• Weighs only 53g and holds a genuine 400ml, so it earns its place even in a stripped-down kit
• Rigid glass-reinforced nylon rings at the rim, middle and base hold the cup's shape and stop the silicone folding while you drink
• The heat-resistant rim keeps hot liquid off your fingertips, so it handles coffee and soup as happily as cold water
• Food-grade, BPA-free silicone that rinses clean in the field
• Nests inside the Frontier 2L collapsible pot for a tidy cook-and-drink kit

On the Water

This is the cup we reach for when weight and space are tight. On a high mountain stream it packs down to nothing until you want a cold drink at the water's edge. It comes into its own on a float tube, where there is never room to spare. And on the flats it saves passing a shared water bottle from hand to hand. Pull it out, drink, collapse it, carry on.