ONEDAY 12oz Glass Water Bottle with Push-Button and Locking Leak-Proof Lid Design with Free Sleeve The bottle is made of high-quality environmental borosilicate glass. High strength, hardness and wear resistanceBPA-free, FDA approved materials Neoprene Sleeve provides a comfortable feeling and heat insulation. The useful sleeve also avoid unexpected falling off and protect glass body from damage effectively. The bottle is tough, durable, and resistant to high temperature. Wide mouth for easy cleaning. Hand wash recommended. Convenient to carry, perfect for travel and sports. Capacity:12oz.