Straw Lid is leakproof and makes cold refreshment that much easier Carry loop makes Straw Lid easy to transport and comfortable to carry Made with 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavor transfer TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours Color Last powder coat is dishwasher safe, keeping your bottle slip-free and colorful Fits most backcountry water filters.