I have a desk job and have had one for all of my adult life. Therefore, I have weak hands and wrists from typing all day. This type of item was recommended to me by my gym trainer to help stregthen my grip as well as my wrist muscles. I like how it is a variety pack that comes with 3 different "weights" of strength. These are good for both makes and females. I do wish they were labeled with what weight each one is, but tht is my only complaint. They are durable, comfortable and easy to use. I use them while watching TV therefore it's mindless but also helping me at the same time. #RankBoosterReview ii. #Sponsored iii. #sandao