The New Look of sustainability. All Nalgene bottles are now made with a revolutionary resin powered by new recycling technology that transforms plastic destined for landfills into high-performance BPA/BPS-free bottles. This material is derived from 50% waste plastic (using ISCC certified mass balance), further offsetting the use of fossil fuels and lowering greenhouse gas emissions. The Nalgene Wide Mouth Bottle has a large opening that 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. Printed graduations let you keep track of your fluid intake or help mix up a drink or dehydrated meal. Features of the Nalgene Sustain Wide Mouth Bottle 500mL BPA/BPS Free So you can drink water that's safe and tastes great. Built to Last Our durable goods are made to last a lifetime. Dishwasher Safe Safe to put in the dishwasher and easy to clean. Leak-Proof Guarantee Continuous, straight shouldered semi-buttress threads keep the bottle sealed tight. Lightweight Engineered to count for when weight matters most. Recycled Material Made from recycled materials, so you can look good and feel good.