3-in-1 Vacuum Insulated Stainless Steel Bottle – Straw, Pour & Sip, Leakproof, 500ml, Portable Flask for Hot & Cold Beverages, Office, School & Outdoors.                                 Three ways to drink: straw, wide-mouth pour, or precision sips .                                                 Double wall vacuum insulation – keeps beverages hot or cold for 12 hours.