With a lightweight, efficient design, this 32 oz water bottle from Hydro Flask features double-walled insulation that keeps beverages cold for 24 hours and hot for 12 hours. Complete with a straw lid that's easy to drink from. BPA-free. Food safe, dishwasher safe; not suitable for use in the microwave or oven. Content + Care. Stainless steel Food safe Dishwasher safe Not microwave or oven safe Imported Size. 32 oz Reusable This item was designed to be used and reused, replacing single-use alternatives to reduce waste.