I got the elbow and knee set and they are amazing. I'm still very flexible and it doesn't slow down my movement or weight distribution. I've hit hard on those and they absorb the impact like they are designed to do, but the material will last longest if it's not making direct contact with what you smash into. so wear a long sleeve and jeans and put them on underneath for best duration and longevity. definitely remember they are just shock absorbers. not skid or sliding knee plate or elbow plate guards.