The Collapsible Sili-Squeeze Hydra Bottle is made of 100-percent silicone. Collapses into itself and is a great travel companion. The Ultimate Squeeze Bottle is dishwasher safe and heat resistant up to 300 degree F. Eco friendly with no after taste, odorless and food grade approved. One hand easy access operation. Easy to squeeze for instant hydration. Perfect for drinking while exercising or wearing sports gear. The flip spout shoots a perfect stream of water wherever you point the bottle. Wrist strap makes transporting bottle a breeze. Bottle is 100-percent BPA Free and 100-percent Phthalates Free. FDA approved. Reusable and 100% Recyclable. Virtually unbreakable. Freezable up to -40 degree F. Light weight.