Our most popular bottle, made with Tritan material which is 100 percent free of BPA, a chemical that has been found to disrupt natural hormones. This fresh take on the classic Nalgene is made without dangerous chemicals and will never leach a plastic taste into your water. Available in a variety of colors to help brighten up anybody's gear. The large opening on our wide-mouth bottles easily accommodates ice cubes, fits most water purifiers and filters, and makes hand washing a breeze. The attached loop-top never gets lost and screws on and off easily.