Hi,
The large fits my knee well. Thick, strong legs.
Don’t love the Velcro straps, they kinda turn inside out getting my riding pants on. And being sewn on front make the widest part even wider. Generally I find the boots (tall) hold them up and the stretch fabric keeps them in place without the straps.
These fit very comfortable. Do wish the armor wrapped around the outside some.
I like them but I’m going to keep looking for something more protective.
Definitely better than in the pants armor.

Fantastic armor for the knee, and really super comfortable for all day riding and walking

I like these knee pads a lot. Over 3 full days wearing them and didn’t feel them at all. They’re very breathable and the material that’s used is silky soft . The only issue is that if you’re not wearing tall boots like MX style, the pads will slide down. For $100, these are my favorite option. They lose a star for the sliding down issue.

I had a drop down at about 15 mph in rutted sand on my Africa Twin Adventure sport, and landed directly on my elbow.
I was wearing the force field elbow pads and I could feel them move as soon as my elbow hit the sand. I came out with a bloody abrasion on my elbow and it swelled up pretty bad. Never went to the doctor but I think I might have fractured it.
So honestly I'm not sure if the elbow pad saved me from something worse or if somehow the pad being a little loose kind of caused the damage. I'm not a big fan of the velcro straps. I think I'm going to try slip-ons next.
The force fields that I have are velcro straps.

I got this elbows protector sleeves, and they best one I have so far. I just hope they have more in stock so I can by for my knees to ;)