Black+Blum Insulated Water Bottle Small 500ml - The Stainless Steel Insulated Water Bottle is a sleek vacuum sealed bottle that will keep drinks cold for 24 hours, or hot for 12 hours. The lid is completely stainless steel too, meaning that the water doesn’t come into contact with any plastic. The artificial leather acts as a carry loop as well as providing a lovely design detail. Handwash only