Environmental and High-quality Material: The water bottle is made of ultra clear Borosilicate glass, which is known as a kind of special environmental and healthy glass material. The cap is made of 340stainless steel and O-ring seals are made of Food Grade Silicone, safe and health.Protective Bag is made of Nylon which provides a non-slip surface and helps prevent from heat and protect bottle body away form breakage, and it is shatterproof. There is a loop on the sheeve, which makes the bottle convenient to carry, perfect for travel and sportsThere are four colors for your to choose: Black, Pink, Green and Dark Blue. And the glass is super smooth, which is very easy to wash just by clear waterThe color of the sleeve can be customizedIt is very to light to carry, and enough large for hiking, riding or other outside sports. It fit to placed on bicyle cup holder or car. Item No:WW-CWB002Material:borosilicate glass and stainless steel 18/8#Logo:CustomerizedlogoCapacity:360ml/550ml/750ml/1000mlPackage And Shipping