64 Oz Wide Mouth Flex Cap Hydration Bottle The Hydroflask 64 Oz Wide Mouth Flex Cap Hydration Bottle is engineered for those who demand high performance in their outdoor gear. This bottle is crafted from durable 18/8 Pro-Grade Stainless Steel, ensuring longevity and resistance to rust and punctures. Its TempShield insulation technology is a standout feature, effectively eliminating condensation and maintaining your beverage's temperature—keeping drinks cold for up to 24 hours and hot for up to 12 hours. Designed for versatility, this hydration bottle is an ideal size for all-day use and is compatible with most backcountry hydration filters. It is also BPA-Free and Phthalate-Free, making it a safe choice for health-conscious consumers. The bottle is dishwasher safe, simplifying the cleaning process, and it offers compatibility with the Wide Mouth Flex Sip Lid and Wide Mouth Straw Lid for added convenience. Backed by a lifetime warranty, this Hydroflask product guarantees durability and satisfaction, making it a reliable choice for outdoor enthusiasts. Product Benefits TempShield insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction Ideal size for all-day hydration Fits most backcountry hydration filters BPA-Free and Phthalate-Free Dishwasher safe Compatible with our Wide Mouth Flex Sip Lid and Wide Mouth Straw Lid Lifetime Warranty