High-grade food stainless steel, with strong corrosion and rust resistance, safe to drink. The unique environmental protection point solution process of the inner liner is safe to use. Smoothly welded mouth, not easy to scrape the mouth and hands, smooth water discharge, even and non-spill. Spiral lid, deepened spiral cup stopper, silicone ring can be removed for cleaning. 304 stainless steel liner, long-lasting insulation. Anti-slip base, increased friction, non-slip and more stable. The polishing process of the cup body has a good metallic feel and the mirror finish is brighter to show the high grade. A variety of colours and sizes to choose from, customise your own sports mug, your mug is your choice. Measuring 9.65*2.8 inches, this custom 17oz stainless steel red wine bottle thermos. 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.