The Sea to Summit X-Mug with Cool Grip (16 oz) is an ultra-packable, collapsible camping mug designed specifically for hot beverages. It improves upon the original standard X-Mug by introducing molded exterior fins that shield your hands from high temperatures.

Key Specifications & Features

• Capacity: Holds a generous 16.2 fl oz (480 ml) of liquid—effectively doubling the volume of the standard X-Cup.
• Weight: Weighs just 2.5 oz (72 g), making it highly attractive for ultralight backpackers.
• Packed Profile: Collapses perfectly flat into a tiny 5/8-inch (15 mm) disc, sliding into tight pack gaps effortlessly.
• Cool Grip Technology: Engineered with built-in, heat-dispersing silicone fins along the sidewall. This layout creates a critical air gap between your fingers and the hot beverage container.
• Rigid Top Ring: Features a glass-reinforced nylon rim that keeps the structure perfectly stable so the cup does not fold or spill while you drink.
• Measuring Lines: Calibrated with internal graduated metric and imperial volume ridges to easily double as a backcountry measuring cup.
• Materials & Safety: Molded from flexible, food-grade silicone that is BPA-free and dishwasher safe. Note that it is not microwave compatible.

Compatibility & Nesting

As part of the Sea to Summit X-Series, this mug nests inside the X-Bowl or flat against the base of the Frontier 1.3L Pot Set for seamless packing and storage.