These black Gatekeeper Straps by f-stop will allow you to attach a variety of accessories to your camera backpack. You can attach photography equipment such as a tripod or light stand, sports equipment such as skis or a snowboard, or camping gear such as a tent or sleeping bag.
The straps are great for attaching a tripod to my Kashmir 2 Air pack.
I like them. So far they work really well. They seem substantial enough to last. Where you latch to lock down the tightness should last good as long as you don't brute force it to much. Be a little gentle with the locking part and take good care of it and you should be fine. I've locked down a tripod and some waters. They work for me. -Jonathan C