July Sky Stylish Portable Borosilicate Glass Water Bottle(18.5OZ/12.6OZ,) with Colorful Protective Bag 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.And there is a loop on the sheeve, which makes the bottle convenient to carry, perfect for travel and sports There are four colors for your to choose: Black, Pink, Green and Blue. And the glass is super smooth, which is very easy to wash just by clear water. Weight: It is very to light to carry, only 0.67lb. It fit to placed on bicyle cup holder or car. Capacity: These is 18.5OZ it enough Large for hiking, riding or other outside sports.