The grips save on using hand tape. In addition to pull-ups, they can be used for dead-lifts and kettle-bells. You can potentially find an application for these grips in any exercise that is grip intensive. The leather, while not stiff, can be softened further with use and time, they will become more comfortable.
STRONGER GRIP: Textured leather for added grip. Reduce the bar slipping out of your hands.
They cover your palm with a pliable piece of soft leather, while a Velcro strap allows for you to tighten the grip down around your wrist.
HEALTHY HANDS: Avoid tearing up your hands on pull-up heavy WODs, chin-ups, toes-to-bar, muscle ups, T2B, knees-to-elbows, kettle-bells, dumbbells and other movements that are hard on your hands.