We don't think you will find better leg protection at this price.
These are one-size-fits-most.
The distance between the top of the opening at the ankle and the center of the knee is 15". If you have a distance below 13" then your foot will push the "knee" above your knee, but it will still work as protection. We do not recommend these if your top-of-foot-to-center-of-knee is less than 12", but very few adults are in that category.
As with everything we sell, you can return these for a full refund of the purchase price if they don't move and feel right for you.
Lynx Side-Wrap Knees
Lynx Knees -- both the simple knees and the side-wrap knees -- are HALF PRICE if purchased with Lynx pants. If you want to do that, purchase the knees as an "option" on the pants, don't buy them here. This product listing is for knees purchased separately.
These Lynx Side-Wrap Knees have a strong, contoured plastic shield ("poleyn" in armor terminology), a comfortable padded lining sewn in, and additional side-protection "wings" with sewn-in plastic plates and padding. Attachment is by a hook-and-loop strap around the back of the knee and a tie above.
Comparison to the Lynx Simple Knees:
The side-wrap knees have superior side protection, but cannot fit inside knee pockets and must be attached on the outside of the Lynx Fighting Pants or other pants.
Lynx Simple Knees
HALF PRICE NOTE! Lynx Knees -- both the Simple Knees and the Side-Wrap Knees -- are HALF PRICE if purchased with Lynx pants. The discount will apply automatically if both are in your cart. These Lynx Simple Knees have a strong, contoured plastic shield ("poleyn" to the cool kids) and a comfortable padded lining sewn in. Attachment is by a hook-and-loop strap around the back of the knee and a tie above. They can also be inserted inside the knee-pockets of Lynx Fighting Pants with knee pockets.
Comparison to the Lynx Side-Wrap Knees:
The side-wrap knees have superior side protection, but the simple knees are not without side protection. The simple knees have a good curve and will protect against most side strikes on most people. The side-wrap knees will not fit inside knee-pockets and can only be worn on the outside.