- Unbreakable, folds flat for compact packing
- Food grade flexible silicone
- Unique design
- BPA free
- Volume: 480ml / Weight: 60g
The Sea to Summit X-Mug is constructed from a flexible, European standard compliant, food grade silicone. A rigid ring within the rim keeps it sturdy and easy to drink out of but still allows the mug to be collapsed to a disk that will fit in the palm of your hand!