Founded in 2009 in Bend, Oregon, Hydro Flask is the award-winning leader in high performance insulated products ranging from beverage and food flasks to soft coolers. The differing feature that truly puts Hydroflask above the rest is its use of a TempShield double-wall vacuum insulation to lock in temperature, keeping the contents cold for 48 hours or hot for 24. This paired with the 18/8 stainless steel to ensure pure taste and their durable, ergonomic design make them the ultimate trusted sidekick.