We started including knees while sparring (lightly) & the padding/fit of these feels like you simply have soft cushiony knees.
They protect your partner (when they get hit) & they protect you (during knee clashes w/checks) really well. They also really make a difference if you do any grappling from the kneeling position or any rolling (especially if you have knee issues like me).
I ordered these unsure of sizing & was allowed to try both sizes & keep whichever pair fit better & that’s amazing customer service.
I’m 5’9 about 165 (should be 155 😄) & the diameter around my calves is about 15”, my knee (from center of kneecap) is about 14.5” & thigh (a few inches above kneecap) is 17-18. The L/XL fits great! The S/M felt a bit restrictive in terms of range of motion.
I compared these with the ones from Wyrmsports & these are hands down better.
I think $25 would be a better price point but am still happy to pay $30 if/when I need new ones.