Made of High quality food grade 304 stainless steel on inside wall and 201 stainless steel on outside wall, scratching resistance.Capacity: 400ml/14oz. double-wall insulated, keeps beverage hot for up to 6 hours or cold for up to 12 hours.it keep hot drink hot in winter and keep cold drink cold in summer.Travel packing nylon bag is optional. it is very thermally insulated and will not burn your hands. It is very suitable to carry when going out for sports. This custom portable sports water cup 14oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: BPA-free, leak-proof, travel-friendly.