Let me clarify most of it for you!
I'm a 6'4" medium to thin build (185lbs) individual and I'm always torn between getting size L and XL for things.
The different sizes of these vests add additional rows of available spots to put extra weights in. If you get a small, the amount of pockets available for weights will be significantly less than the large.
The Large vest's zipper is 15" long.
The XLarge is 17.5".
I figured this may be helpful for some people looking into the sizes.
Fringe was able to help me with that quickly so that I could place my order :) If you need the length of the zipper measured, send them an email!
All the vests come with 10lbs (I'm not sure how the XXS gets shipped because it's max capacity is under 10lbs with double weights in each pocket, so be sure to check with fringe first if this is of concern to you)
In this link (to their booster packs):
you'll see that it shows you the different sizes of vests... and how much the vest will weigh if you have 1 metal plate in each available pocket for each size vest. This is important! Because I really don't like the feel, or even stretching out those pockets to fit two weights. So for me personally, I'd recommend that if you have a weight in mind that you want in the vest... be sure it holds it with only single weights in each pocket.
I personally have mine set to 17lbs tested on my scale (I have a L with all pockets full with 1 plate) and I wear it to my office job under my suit (yes I'm serious haha). I take 7 flights of stairs up to work/lunch every day. Every hour on the hour while at work... I have a pull up bar I use for pullups/inverted rows, I do pushups, filing cabinets I do dips at, and even an adjustable set of dumbbells. This vest has made the world of a difference to push through some body weight movements plateau. When I take this thing off when I get home... I feel like I'm flying... Then of course I use my fringe equipment for my main workouts ;)
I know a lot of people say this is an expensive vest... trust me once you get one, you'll understand why.
Fully washable. Fully adjustable. Conformed to your body... you forget you have it on! I can't say enough good things about it. You won't be sorry!
Cons: Seperate cost for extra weights, little irritation around the neck area during extensive training, clip-ties loosen on the sides during jumping, or running, that needs readjusting throughout routine.
I am a 5'11" 160lb male and purchased the large vest. I've used it while running, rowing and doing double-unders. I think I probably should've bought the medium but I figured I'll grow into this a little more, plus I wanted to be able to easily get it to 20lbs. I have it loaded to 20lbs which requires doubling up the weights in about 20 of the slots. I originally stacked them down the center of my back but got bad rash areas on my lower back from the weights bouncing and rubbing, specifically during the double-unders. So if you're going to double stack the weights to get it to 20lbs I would recommend putting them higher on the chest and back area to avoid a rash near the waist.
I've never used any other vest so can't say this one is the 'best' but I did a lot of research prior to settling on this one and I really like the feel, fit and durability.