The Black Diamond Padded Gear Sling uses a timeless design that is still popular today. It has a simple adjustment to fit just about anyone. Because the buckle and webbing are burly, we have never known anyone to wear one out. If you run out of slings at the end of a pitch, this can be used as a runner (it's rated to 2000 pounds). We have rarely used it for this, but when we did, we were thankful. It comes with soft fleece lining that is ergonomically shaped. It has convenient clip in points so you can clip it to the anchor and organize the rack.
The only thing it does not have is a plastic-coating like most of the Black Diamond harnesses and big wall gear sling. This makes the gear bunch up a little more. Also, the padding is not quite as thick as some gear slings and not quite as light as others. Alpine climbers probably want a more featherweight option but most trad climbers will find it plenty light.