Coleman Burst Stainless Steel 24oz Autopop blue nights The double vacuum structure provides excellent heat and cold insulation, keeping the perfect temperature for a long time. The one-touch open lid has a secure lock function so you can drink immediately when you want to. Specifications: Size: Approximately 7.5 × 9.0 × 27.5 (h) cm Weight: Approximately 425g Effective Capacity: 709ml Material Types: – Inner Bottle: Stainless steel – Body: Stainless steel – Lid: Polypropylene, Copolyester resin – Gasket: Silicone rubber Heat Retention Efficiency: 56°C or higher (for 9 hours) Cold Retention Efficiency: 7°C or lower (for 32 hours)