A 40 oz wide mouth water bottle with our leakproof Flex Straw Cap—easy to fill, easy to drink. Open it up, add your ice, and flip to sip. The insulated stainless steel keeps it cold for up to 24 hours. The TempShield double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours. The insulated Flex Straw Cap is leakproof when closed. Made with 18/8 pro-grade stainless steel for durability and a pure taste with no flavor transfer. The wide mouth opening is ice-cube friendly. The Color Last powder coat stays clean and colorful. The bottle fits most backcountry water filters. It is BPA-free and dishwasher safe. The Flex Straw Cap is not intended for use with hot liquids, and it's not for use on a stove, in a microwave, or freezer. This unisex water bottle is perfect for anyone looking for a reliable and durable hydration companion.