Detour Collapsible Mug | 475ml Stainless Steel | Packs to 1 Inch

Roland Tyson started Sea to Summit in his childhood bedroom in 1983, sewing outdoor gear on an old industrial machine. By 1991, after outfitting a solo Everest ascent that started at sea level over 1100 kilometers away, he'd turned his bedroom operation into a full brand. He and Penny Sanderson spent years climbing, sailing, and trekking around the world, testing prototypes in the wild. This mug is what happens when you spend decades iterating gear in the Himalayas and the Australian outback: a 475ml collapsible cup made from EU food-grade silicone and 304 stainless steel that collapses to 31mm tall. CoolGrip fins molded into the sidewalls keep your hands comfortable whether you're drinking hot coffee or cold water. It weighs 3.7 ounces and fits in a jacket pocket.

Collapses flat enough to wedge between your other stuff. You will impress exactly one person at the trailhead and they will ask where you got it. Everyone else will keep drinking from their scratched Nalgene.

• EU food-grade silicone rubber and 304 stainless steel
• Collapses to 31mm (1 inch) tall for storage
• Expands to 475ml capacity
• CoolGrip fins molded into sidewalls for handling hot or cold drinks
• BPA-free
• Packed size: 4 × 4 × 1 inches
• Weight: 3.7 oz (105 g)
• Roland tested this on Everest so you don't have to test it at the office
• Meets EU food-grade standards