Made of 100% food grade silicone material, BPA free and FDA approved, this silicone travel mug is non-toxic, tasteless, eco-friendly, you can use it again and again. Can withstand water temperature of -50 C. - 200 wide mouthpiece with stainless steel rim for convenient operation and easy cleaning. Built-in scale in the cup to eliminate the water capacity. Portable hook and hand rope: the combination of both can fold the cup and the dust cover to prevent accidental falling. These travel mugs are suitcases and do not take up space, ideal for outdoor trips, camping, travel and sporting events. specifications: Type:Foldable Mug Gender: unisex. Material: silicone Weight: 63g Capacity 200ml Foldable size: 3 x 8 / 1.18 x 3.15 inches Unfolded size: 4.5 x 8 x 9 cm. Box contents: 6 x folding cups.