Review on Arvano 2L Water Bladder Reservoir for Hydration Backpacks - Ideal Replacement for Hiking, Biking, and Marathon Running - BPA Free & Leak-Proof by James Pope

I love these little hydrators. Used similarly on all continents of the planet. Put them in the pocket of my three-day assault pack. Pass the hose over the shoulder strap. And bam. Hydration as needed. Pro tip: Find a Mylar bag that fits your bladder for hydration if you want your drink to stay cold longer. When you are in a hot environment. You will drink warm or hot liquids without putting the drink on ice in your bladder and surrounding it with KEEP COLD MYLAR POUCH.