Made of High quality food grade 304 stainless steel on inside wall and 201 stainless steel on outside wall, scratching resistance.Capacity: 350ml/12oz. 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. If you have new style or design for cups, we can coopearte also, welcome your calling or email. This custom 12oz stainless steel cup with straw. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. We offer logo printing and full packaging customization. Product Highlights: BPA-free, leak-proof, travel-friendly.