[Product Information] The dimensions of the cup before folding are 2.16 x 2.16 x 3.18 inches and after folding are 2.16 x 6.29 x 3.18 inches. The silicone material of the collapsible travel cup is lightweight and durable. Ideal for simple and convenient travel.[Tips] The cup is not fully insulated, so it is not recommended for very hot liquids to avoid scalding. When using hot liquids, hold the cup by the insulated ring in the middle. Ensure the lid and opening are completely sealed after filling. Do not carry the cup in a backpack when full, as vigorous movement may cause the closure to loosen.[Safe Material & New Upgrade Version] An additional collapsible layer has been added to increase capacity. Made from food-grade silicone and a plastic lid, the cup is easy to clean, non-toxic, odorless, stain-resistant, durable, flexible, and reusable. Designed to be safer and larger than similar products available.[Perfect Seal] Leak-proof design ensures a secure seal. The sip hole allows easy drinking without opening the entire lid, and includes a silicone cover to close the opening when not in use, preventing outside contaminants or small insects from entering.[Awesome Design] This portable folding silicone cup features a D-shaped hiking hook, making it easy to attach to bags or carry with a hand rope or hook. Space-saving design collapses to just 2.16 inches, fitting easily into pockets, purses, backpacks, or suitcases. Ideal for outdoor activities such as hiking, camping, traveling, and sports. Also suitable for office use as a coffee cup.