This hip belt pocket attaches to the hip belt with 1/2" webbing straps and secured with a ladder locks. It weighs about 0.9 ounces and was designed to fit a large smart phone with a case along with some snacks. The webbing attachment slides through a daisy chain of webbing on the hip belt.
It is made from water proof Xpac material and a water resistant zipper, the seams are not sealed though so while it will hold up in light rain, you shouldn't trust it to keep water out in a heavy rain.
If you are ordering this for a pack you already have (not for one of ours) please type into the notes box what kind of backpack you have so that we can make sure the attachment system will work well for you.