Review on 🏃 Hydrapak Velocity IT Insulated Water Bladder/Reservoir - Running Hydration Vests, 1.5-Liter (50 oz.), Reversible for Effortless Cleaning, Safety & Dependability by Jose Guevara

I HATE hot or warm water. This bladder keeps my water cold, especially when I add ice or partially freeze some water in my bladder. We camp with a fridge so I keep my blisters cold before use. I have two of these 1.5 liter bladders. I prefer two smaller bubbles so I have a measure of how much water I have left. Once on a hot day I had heat stroke when I ran out of water with a 3 liter bladder and I had 5 miles to go. Carrying two tanks with me means I can choose to head back when one of them is empty so I don't run out of water again.