Features: PREMIUM QUALITY: The inner of the bottle is made from 304 stainless steel and the outer 201 stainless steel, which allows long-time insulation and durable for daily use. NO LEAKAGE: Sealing cap with sealing silicone ring inside, you can just put this bottle in your bag without worrying about spilling and dripping. 5 LAYERS: From inside to outside, there are 5 layers, respectively are inner electrolytic grinding layer, 304 stainless steel liner, vacuum insulation layer, outer stainless steel layer, antioxidant paint layer. LARGE CAPACITY: 500ml of volume, you can fill the bottle with any water or beverage you like. It meets your need of water intake to a large extent. PORTABLE: Proper size and lightweight, just put it in your bag and make sure you can drink enough water as you need. Features: