The compact Sea to Summit X-Cup is perfect for smaller hands. It is constructed from flexible, European standard-compliant, food-grade silicone. A rigid ring within the rim keeps it sturdy and easy to drink out of, but it still allows the mug to be collapsed into a disc that will fit in the palm of your hand!  Features:  Food-grade flexible silicone, BPA-free Calibrated as a measuring cup Specifications: 

Volume: 250ml

Weight: 45g