WOOLY MAMMOTH INSUL 21OZ GR/SL

The Wooly Mammoth bottle includes the proven insulation, Prima-Loft??â???¢, between the double walled bottle to create the most advanced, insulated sports bottle on the market. Tests with leading brands are no match for the performance shown for keeping the temperature stable in hot or cold conditions. The Wooly Mammoth also use polypropylene, lighter weight, more flexible material along with a large spout for maximum flow rate. BPA free.