The ReChalkz pocket chalker is the first and only pool cue chalk holder made from 100% recycled rubber helping to keep thousands of old bike tires out of landfills. This stylish and functional chalker works with any size or shape of pool cue chalk including the smaller Kamui Chalk and the octagonal Predator 1080. When you are spending as much as $30 on chalk, you want to make sure not to lose it and the ReChalkz doesnt let go! The ReChalkz made by Renewed Flatz rubber pocket chalker is made out of recycled inner tubes, not tires. The inner tube has a supple feel that grips pant pockets and feels a bit like leather.