These are pretty nice. I took them to my Dr's appointment and asked my Dr about them. He gave me some ideas on stretching and using them to benefit me further in feeling better. I would have given a higher rating had they came with a guide to their use, not that I don't know as I have used them before, but just in general to anyone receiving them. They do withstand a lot of pressure and they are light enough to use, to carry around with you and even for my grandchildren or my daughter who is pregnant to use them to some variable of strengthening. I would recommend them if you are looking for healthy ways to stretch and exercise. #RankBooster #Winz Sports #Micogo