I picked up one of Jarets (Alaska Guide Creations) Bino Chest Packs a few weeks ago. I used it this past weekend on a hog hunt. It was a miserable weather hunt that tested it well. I covered about 15 miles in constant drizzle at 32 -36 deg. weather on Saturday. The pack work out great. It fits snug and doesn't flop arround. Everything in the pack was dry at the end of the days hunt. I used it often glassing an area I had never hunted. I had no problems and am very happy with the pack.
It carried my binos, wipes, GPS, rangefinder, and my maps, with ease.
