It is made of stainless steel, double-walled vacuum insulated.
HIGH QUALITY - Premium SUS 304 stainless steel internal to avoid unhealthful chemical substances and keep your beverage pure and refreshing. Food-grade pp material of the lid so you rest assured when drinking
STRONG INSULATION PROPERTIES - Double vacuum insulated wall to keep water hot for up to 12 hours and cold for 6 hours and also keep bottle cool to touch with hot liquids and sweat proof with cold liquids.
ENOUGH CAPACITY EASY TO CARRY - 350 ml capacity is perfect for people at work, at school or spending time outdoors. And also very portable for an ongoing.
WONDERFUL DESIGN - The perfect looking, anti-drop, wear-resistant, anti-corrosion, so powerful functionality that you never want to miss. SATISFACTION GUARANTEED - We are confident with our product and we hope you can love it.