I looked a Leerburg, but I was directed to go to Rayallen.com/ by a K-9 handler. Good luck going their, it's like a candy store. The harnesses have Velcro to attach packs, camera's, flashlights, ect., evenly distributed weight, where and when you want it. I am not shopping Leerburg for essentials anymore after finding where the pros go..
They have cooling fans for crates and tempeture alerts, if the crate goes above a certain temp.
You will enjoy that one, have your credit card handy, they don't sell this stuff at pet stores..