Nufoot BPA-Free Glass Water Bottle with Protective Neoprene Sleeve Neoprene sleeve glass bottle. Healthy and Eco-friendly borosilicate Glass bottle is a great alternative to BPA ridden plastic bottles Maintains a clean and crisp taste to your beverages, with no metallic or plastic tastes Engineered to withstand extreme temperatures of both hot and cold Neoprene sleeve helps protect and Insulate Great for working out, home, office or on the go