They fit perfectly and feel amazing, it's like having goosebumps on your hands. They work out the upper body muscles, chest muscles, deltoids, biceps, triceps. They apply great pressure when worn, you get used to them and can't do without them. UPDATE 15-07-2022: After seven months of use, they start to wear out naturally over time, so they don't last. Just like swimwear, you have to change them every year