With the OTF&&';;s convenient, one-handed cap design, you don&&';;t have to drop everything to take a sip. Its slim shape and leak-proof cap make it ideal for workbags, gym bags, and backpacks alike - without worry that it&&';;s going to give your stuff a soak. Our new Nalgene Sustain product line is made from Tritan Renew, 50% certified recycled content further offsetting the use of fossil fuels and lowering greenhouse gas emissions. Free of BPA, BPS and phthalates, opening accommodates most water filters; marked with milliliters and ounces for easy measurement. Features: With the OTF&&';;s convenient, one-handed cap design, you don&&';;t have to drop everything to take a sip. Free of BPA, BPS and phthalates, opening accommodates most water filters; marked with milliliters and ounces for easy measurement. Nalgene Sustain Tritan On The Fly Plastic Water Bottle, 24 oz Made from Tritan Renew, 50% certified recycled content further offsetting the use of fossil Its slim shape and leak-proof cap make it ideal for workbags, gym bags, and backpacks alike