Thank you so much I received the knee pads today. How great they are! My son crawled around outside on the concrete for a couple of hours and he was trying to work out how come his knees were not sore! He usually crawled on the concrete with his knees up, but not today. I will let you know in a couple of weeks also how he is going. Thanks again, I will be sure to mention these to my friends as they are very reasonable in price also.