What Our Gearhead(R) Experts Are Saying: "I clip this flask holder onto any of my daypacks whether I'm on a sunrise hike or a bikepacking mission. It's simple, tough, and surprisingly secure, even over rough terrain."We love how easy it is to stay hydrated with the Flask Holder strapped to our pack. Whether we're cruising singletrack or trekking up to an alpine lake, this ultra-light accessory never gets in the way and always keeps our flask within easy reach. The stretch fabric hugs bottles of varying shapes and sizes, and the secure red elastic band means nothing goes flying when the trail gets bumpy. Crafted from 100% recycled polyester, this removable holder clips onto almost any backpack. Its compact, low-profile design and adjustable, anti-slip attachment system give us the confidence to keep moving without worrying about our hydration setup. It's small, but it makes a big difference out there.