Features: Made from silicone, these collapsible water bottles have a compact collapsed capacity of 225ml. Featuring a cup lid made of quality stainless steel, the water bottle is leak proof. The wide mouth design facilitates easy cleaning. Complete with an aluminum alloy buckle, carrying our reusable water bottles around is effortless. Ideal for travel, camping, gym, workout, and various outdoor activities. Specifications: Material: mainly silicone Color: black Size: about 16.9 oz/ 500 ml Package includes: 2 x Collapsible water bottles Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Please note that new products may have a silicone scent which can be easily removed by soaking the cup in 80 Celsius degree hot water for 15-20 minutes.