The size of this folding cup is twice as large as the Sea to Summit X-Cup, so in addition to hydrating during your meals, you can also use it to drink a cup of broth or soup on colder nights.

What is food grade silicone?

If you're concerned about migrating harmful materials to food, you can rest assured. The food-grade silicone from which the Sea to Summit X-Mug cup is made is a safe material for use with food.

It is the same material that is frequently used for the manufacture of molds for cooking baked food. Food grade silicone is non-toxic, safe and flexible. The base of the X-Mug cup is made of rigid food grade nylon that resists high temperatures and is free of BPA.

This base, together with the ring of the superior part of the cup, made of the same rigid Nylon, brings robustness and stability to the Sea to Summit cup, making it more comfortable for you to drink from it. The X-Mug folding cup is ideal for hot and cold drinks in the mountains, on the campsite or in your camper van or motorhome. It's super lightweight, takes up minimal space, and is easy to wash as it's dishwasher safe.