First set of knee sleeves I've owned. I'm 6' 225 and 40 yrs old and went with the mediums. Never had any knee problems growing up playing football, hockey and powerlifting, but left knee starting to feel the age. Now that I'm no longer proud and trying to impress people, I'm up for anything that will help at this stage of the game. I'm waiting for the full body sleeve now! In the meantime, these knee sleeves are very nice/snug fitting. I've used them on heavy Oly lifts and WODs, I could feel a difference immediately on both types of activities. Thinking of having them surgically adhered to my legs!