The super cool water bottle can both keep 500ml liquid warm and cold. It comes with a normal lid and a sports lid.The Neo water bottles are made of the best quality steel on the market – 18/8 steel. It has a thermal function and keeps liquids hot for up to 12 hours and cold up to 24 hours.Both lids have a handle so they can easily be attached to a bag or the pram. Both lids are completely tight due to the silicone in the lids – which is also BPS free. Material: Stainless steel Dimensions: D7 x H 22 cm  500 ml