When founding our own first gym, we had one vision among other things: Chalk must always be available to gym goers. To this day, this vision has been fulfilled, as it will continue to be.
"A workout without Chalk is like a sausage without mustard." Buy a package, and make sure your grip doesn't slip at least because of sweat. Many gymnastics grips work better with chalk, but remember moderation.
Size of 1 piece 5 x 5 x 3 cm
On on on on.