A few days ago, I did not know how to take Andrei( my nephew ) outside. He was crawling all over the place, but I was worried he’d scratch his knees on our drive way or get his knees dirty on our lawn. The Snazzy Baby Knee Pads would have alleviated my concerns. They have slip proof traction beads that guard against skidding, work on surfaces indoors and out, are adjustable with Velcro straps, and are machine washable. They allow full movement and can guard against wear and tear on pants too. They also fit up to four years, so you can use them as makeshift knee pads later on as well.