*A substantial portion of each sale will benefit Calvin Heimburg and his pizza toppings*

These Pizza Sacs were designed for Calvin thanks to the great people over at Whale Sacs, one of Calvin's sponsors. 

Grab a sac and roll it in your hands, between fingers, you also can rub onto your disc, equipment, etc. Filling: clay-based stone/powder - non-rosin, cleaner than chalk.