Thermos Vacuum Insulation Straw Bottle Miffy [One-touch Open Type] 0.36L Red (FFI-400FB R) Material Material: Main body / stainless steel (acrylic resin paint), cover, body cap / polypropylene, valve packing / silicone spout, straw / polyethylene Accessories: shoulder pad with pouch, replacement straw set Cold insulation effect (6 hours): 12 degrees or less