This portable water bottle is foldable, and the size is about 3.8 x 1.8 inches / 9.6 x 4.6 cm when folded, and about 3.8 x 7.3 inches / 9.6 x 18.5 cm when unfolded, which is convenient to carry around. The foldable water bottle is mainly made of high-quality silicone material with a metal buckle, which is reusable, lightweight and can be used for a long time; the buckle can be hung on a backpack, which brings you a lot of convenience. The travel folding water bottle can withstand high temperatures and is suitable for cold and hot drinks; the cup body is easy to grip, has good sealing, and is not easy to leak or spill. The silicone water bottle is suitable for indoor and outdoor activities, including running, cycling, hiking, camping, work, school, travel, gym, fishing, etc., allowing you to replenish water outdoors in time.