Tyny Tools Swivel Carabiner: Large Green Each

These are perfect for my application. I use them as a 'carabiner' to hold my Platypus 1L water bottles hanging off the front of my backpack straps so I can quickly drink while I'm hiking. I've found that stuffing bottles (or even the roll up water sacks) in side pockets of a backpack are usually difficult to reach. These are light weight, of small enough size, inexpensive, and swivel to allow me to do this without hanging the pouches at an awkward angle. I did look for many carabiner-like options before settling on this, since it was functionally what I was looking for, low cost, small and even green which matches my pack.