First off, I'm not a small guy. 5ft 10in, 250 lbs, 44 to 46 inch waist, 27 inch thighs. You do the math.. I shouldn't even go vertical.. I am new at this. First needed a harness to use in my inversion machine to take the strain off my 54 year old, destroyed knees while stretching my back to relieve back pain and some really bad neuropathy. I searched all the mfg's sites, and a number of online retailers (bought here though, great customer service) for a harness that was listed for a 44 or 46 inch waist.. Guess what. There was only one... a Canyonering model that just didn't seem right for my use. Back to the drawing board. I tightly wrapped a rope around myself and determined that if I sucked my gut in really hard I could squeeze into a 41.5 inch (not breathing by the way) harness. This BD model had a range up to 42 inch's. What the heck... it's all I could find..so I ordered it. Just got here today.. I was on the way out to some decent rock face's with a very good climber I know and stopped at the old post office... Normally I have to use one of my friends harness's along with a long sling that I double haul through the harness in such a way that it works... Rube Goldberg climbing for sure. But guess what I learned today.. The BD Dual Speed works. And it works well on my fat **s 46 inch waist. My legs are a strong 27 inch and it excels there too. In fact! There is plenty of adjustment to go way smaller and even a bit bigger. I'd estimate that I could go two or three more inch's in the waist and about the same on the legs. I did get last years model as I wasn't paying attention. This years has a haul loop and is about 5 bucks less. But heah! This is about a big, fat guy finding an harness that works. I want to climb. Did my first assent today. 35 feet and I felt like I was on top of the world. No falls, pretty fast, and just an excellent time! My buddy is one of the top 10 climbers in our area... said he never saw a fat guy even try this rock. In all fairness, it was a really easy route. So.. any of you big fat guy's need a really great harness.., just compare our size's and if this one works out I think you will really dig it! There is so much adjustment in this harness that even when I reach my goal of a 36 to 38 inch waist and 175, maybe an 185 lbs it will still fit and work well. Good luck all and happy climbing.