Durable 18/8 stainless steel construction that is dishwasher safe. Best-in-class triple-wall insulation keeps drinks cold up to 30 hours and holds ice for up to 48 hours. Ultra-secure half-turn, splash-resistant lid for easy sipping with a straw. Comes with a bonus extra straw and cleaning brush. Convenient, cupholder-friendly design for on-the-go hydration. Every purchase funds 50+ days of safe drinking water for someone in need through the GROSCHE Safe Water Project.
