I use the Crooked Horn Outfitter's model w/ 10x50 Pentax binocs and you can hardly tell they are hanging on you compared to just a neck strap. Also, it is worth it's weight in gold when you are stooping, crawling, or climbing through fences and such since the binocs hold close to your body instead of dangling straight down towards the ground. And it stops the side to side sway of the binocs while you are walking. It is an accessory well worth the money.