When my father was in cardiac rehab he had to use a light weight. I wanted a good finish that would allow him to grip even when he was sweating. The majority of injuries with weights come from dropping the weight. Even ones as light as a pound can break a bone if it hits right. I also knew he wouldn't want to fuss with gloves or even straps for a pound or two pound weight. I decided on this because of the finish and the feel.
A pound is a pound no matter what form it is in. This dumbell has a finish that is soft, comfortable and easy to grip. It also doesn't slip when you are sweating. The finish is somewhat rough and provides better surface grip. I purchased this 2 years ago and the finish is still like brand new.
I also use this as my weights for shadow boxing cardiac workouts. I don't have to worry about losing the grip and the weight flying through the air no matter how tired or sweaty I am. It also stays comfortable through the workout for me. I can let my weightlifting gloves for my lifting workout weights.