Dent-resistant stainless steel shell for long-lasting durability. Stainless steel vacuum insulation maintains beverage warmth for 4-6 hours, ensuring every sip is as satisfying as the first. Easy-to-use lever lid with snap-on flavor indicators for customized beverage experiences 18/8 stainless steel double wall construction with vacuum insulation ensures 4-6 hours of temperature retention. Perfect blend of convenience, durability, and insulation for maintaining beverage freshness all day long.