• Double-Wall Vacuum Insulation: This advanced triple-layer technology creates a thermal barrier that eliminates temperature transfer, keeping your favorite beverages ice cold for up to 30 hours or piping hot for up to 12 hours. • 18/8 Food-Grade Stainless Steel: Constructed from premium, BPA-free metal, this durable material ensures your tumbler is rust-resistant and odor-free, providing a clean and safe drinking experience that lasts a lifetime. • Leak-Proof Straw Lid: The innovative lid design features a secure, splash-resistant seal with a matching reusable straw, allowing for effortless sipping while preventing messy spills and leaks during your daily commute or activities. • Cupholder-Friendly Design: Featuring a tapered slim-base profile and an integrated carry handle, this 40 oz tumbler is engineered to fit securely in most standard vehicle cup holders, making it the perfect travel companion. • Product Care and Longevity: To preserve the vibrant Sweat-Free Powder Coating and ensure the product's performance, handwashing is highly recommended to maintain the exterior finish and overall product longevity.

Diamondback Branding is not an authorized Hydro Flask partner.

All Hydro Flask products are modified after initial purchase and may void warranty.