The SN9901 water bottle is a double-walled insulated vacuum bottle that helps you stay cool and hydrated in hot weather. Working hard in hot conditions requires thin and cooling work clothes and adequate hydration. This double-walled water bottle features vacuum insulation technology to keep drinks cold during long working hours. It is made of stainless steel for optimum durability and comes with a large opening for easy cleaning. Moreover, the bottle works equally well for cold drinks and hot drinks.