I got these shorts after starting CrossFit recently.  I was losing weight, and my elastic waistband shorts were getting too loose.  I like board shorts, but had problems with the shorts grabbing my knees when I was doing any deep squats.  Thought I'd try these.  The long side vent/slit and elastic panels on the inseams provide great freedom of movement.

The waistband is a bit thick and tall with tons of velcro compared to any other shorts I own, but I suppose that all serves a purpose - you don't want your shorts coming off when you're in the octagon.  I'll probably never see the inside of a cage, but I'll feel good knowing that these won't fall to my ankles when shooting for a sub 3 Fran.  (yah, right...).  I haven't run into a WOD that made the waistband uncomfortable.  Then again, I have a lot less gut than when I started with the CrossFit East Oahu gang.