1. Water relief process make it feel comfortable,wear-resistant paint. 2. Leak-proof lock design, safe sealing, push down to open the lid, turn up to lock the lid. 3. 316 stainless steel liner, high temperature resistance, oxidation resistance, corrosion resistance, drinking water more at ease. 4. Silicone cup bottom, anti-slip and anti-fall, safe and free of worries. 5. Good heat preservation effect, suitable for both hot and cold preservation, heat preservation can be more than 6 hours.