What to consider when getting your shorts:
For ground-fighting/grappling or stand-up, you need freedom of movement. Don't get them too big- some do have adjustable waistbands, but you don't want them sliding down. I like the ones with somewhat stiffer material because they don't flop down around my upper legs when I'm on my back, and I like the amount of traction they get on the mat.
Make sure you check the size. Some brands require you to write in the size(and sometimes the color) in the note section at checkout.
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