An awesome, unique and distinct bottle - for the adventurer at heart.? ?Rugged body made from stainless steel.? ?High grade 304 Quality Stainless Steel.? ?Superior thermal insulation by using double walled stainless steel construction with copper coating.? Large capacity - 800ml approximately.? ?Can retain temperatures for 20 hours (under ideal conditions).? Hang-on stylish strap with branding included in the pack.? 100% Leak proof.? Adventurer bottle cap with compass.? ? ?All drink safe.? Do not use with aerated drinks as the bottle is insulated and the pressure can cause damage to the product.