Make of food grade to ensuring safe drinking, especially suitable for sports enthusiasts and family users The lid features a four sided buckle design, providing excellent sealing and effectively water leakage clear design facilitates viewing of remaining water levels and timely replenishment of water Suitable for placing in backpacks or car cup holders, it solves the problem of water bottle tipping and leaking during outdoor activities 550ml capacity, light weight and easy to carry, suitable for hiking and daily commuting