Refresh on the go with this insulated, stainless steel 32oz Wide Mouth bottle and leakproof Chug Cap. TempShield®? double-wall vacuum insulation keeps drinks cold up to 24 hours, hot up to 12 Made with 18/8 pro-grade stainless steel for durability, pure taste and no flavor transfer the narrow chug spout provides a convenient, controlled flow, Chug Cap is leakproof when closed and the wide mouth cap easily fits ice cubes to keep things cool. Handwash only.