I even why these when him in the bathtub you know how dangerous it is you can slip and fall and hurt your elbows and your knees I've got one that goes right inside my football helmet is spongy I've broken it three times I've got a very large head about the size of two footballs and it fits with plenty of room to spare I think it's one of the best ideas ever came out with specially for your knees in your elbows they've got a new one that fits over your nose and lower jaw so when you fall on your face you just bounce right back up off the ground without even letting anybody know that surround you that you had fallen so they don't laugh at you wonderful great idea how by for more than grade I'm going I'll wear these out in less than a month because I don't know how to rollerskate now I don't have any bruises or scratches or bumps on my head nose toes elbows bellybutton and see each of them upside down on your feet when you're running it's a nice soft run one of the best products I've ever seen