Our shared mission is to help protect America's national parks, connect people to nature and inspire the next generation of park stewards. Our Limited Edition National Park Foundation x Parks For All collection honors the 150th anniversary of Yellowstone available in 32 oz Wide Mouth and 21 oz Standard Mouth bottles. Additional exclusive designs coming soon. Features Limited Edition Collection in partnership with the National Park Foundation TempShield double-wall vacuum insulation keeps beverages cold up to 24 hours and hot up to 12 hours Flex Cap is leakproof when closed Honeycomb Insulated Cap for maximum temperature retention Made with 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavor transfer Color Last powder coat is dishwasher safe, keeping your bottle slip-free and colorful BPA-Free & Toxin-Free Not for use on a stove, in a microwave or freezer Keep hot liquids out of the reach of children Dishwasher safe.