Product description Body: Glass Lid: Polyethylene Seal: Silicone rubber Wire: Stainless steel Volume: 300 ml Key features – Tight-fitting stopper prevents leaks. Care instructions If you want to sterilize the bottle with hot water, preheat the bottle first with warm tap water. This prevents the glass from cracking. Dishwasher-safe. Wash and dry this product before using it for the first time.