The four straps are easy to adjust and will give you a snug enough fit to prevent the pads from shifting around to any significant degree. I've used my pads for a few months now and they seem pretty durable. Comfy for the better part of the day, never shifted. Made crawling through bush much more comfortable. Soft material, so balls may bounce off.
Many straps insure tight fit.
Pads cover all of shin and knee, flex pretty well too. I didn't notice I had them on till they started to chafe, and this was after hours of running, crawling, crouching, sneaking, and sliding. And I only noticed them because they were on bare skin. I recommend them to anyone looking for good pads at a good price. Straps are easily adjusted and all four are now Velcro.