1 Litre capacity. Massive size makes it easy to keep track of your recommended daily water intake (approx. 2 Litres per day). Hydro-Soul bottles are made of double-walled stainless steel and are vacuum insulated for maximum temperature control. These bottles are able to hold ice for up to 24 hours or keep hot drinks HOT. All bottles are crafted from food-grade stainless steel and are BPA Free. Individually gift boxed in matte black Hydro-Soul boxes. Hand washes only. Do not freeze or microwave.