Stainless steel accents and a powder-coated finish ensure this bottle endures the elements. Double wall with copper lining keep contents cold for 24 hrs or hot for 12 hrs. Includes a sport top and twist top lid for multi-use functionality. A portion of all sales will be donated to the Warrior Spirit Retreat, a place where warriors learn to heal. To contribute or learn more, visit www.warriorspiritretreat.org.