Review on SPRI Chalk Block & Chalk Ball: Enhance Performance in Gymnastics, Rock Climbing, Bouldering, Rings, Weightlifting, Pool Billiards by Amy Cook

Does what it is supposed to do. Convenient to carry in a Ziploc bag. Easy to clean. I've used liquid chalk before, but it's sticky and difficult to clean. Regular chalk lays better and comes out easier. Update: As of August 2020, chalk is still strong. I don't use it for every workout, but most recently when I started lifting weights for the Olympics during quarantine (not enough weight for powerlifting haha). Sometimes on longer workouts I have to add a little more mid workout as my palms get sweaty. I'm glad to see that the chalk is still cheap.