Knee pads
Lepfun S9000 Knee Pads, (1Pair) Thick Sponge Anti-collision Kneeling Kneepad Support for Outdoor, Climbing and Sports (S9000 Black)
These are good knee pads. They are good for any type of outdoor activity and will protect your knees from any damage.
These knee pads are very thick and have a big cushion to protect your knees from contact. I would definitely wear these when I go skateboarding or climbing or rollerblading. If you have a fear of falling on your knees and cutting them up, these would be the knee pads for you.