I bought it for the size and color and fell in love instantly. The first hydration pack I've ever used, I'll never carry a water bottle in my backpack again. For reference, I'm 5'2" and 112" and it fits perfectly. I've taken it on two serious 6+ hour mountain hikes and absolutely love it. For both excursions, I was able to fill it up and carry bear spray, bug spray, cliff booms, a small first aid kit, and a light jacket with room. It also doesn't leak, and the mouthpiece stays securely in place with the hook when not in use. very good
Good quality and cheap second purchase