This pack is basically new; we tried it out a couple times in the back yard, but haven't taken it on any trips. It's clean, no hair, no smells, etc. Unfortunately it's a bit too small for my 70-pound pitbull, so I want to sell it to help pay for a replacement.

Since I haven't actually used this pack on the trail, I can't give a detailed review of it. But for what it's worth, the materials all seem appropriately heavy-duty, and the suspension/harness system seemed functional enough as my dog ran around the yard. We've had problems with other packs shifting around, or slipping off to one side (even when the load is properly balanced), but this pack's suspension seems to minimize that potential. There's one strap under the abdomen, one under the lower chest, and another across the upper chest which itself connects to lower chest strap via a final strap running down the sternum. The suspension system seems to do a good job at keeping the load from shifting around.

Here's a link to the Amazon product page.

Here're a couple pictures of the actual item: One, Two.

New, the pack cost me about $65 + shipping, so I think $40 delivered is fair.