Crisscrosses and double-unders are all good for the planet when they are done with the Skipping Rope. This eco-jumper is made with adjustable, 100% cotton rope and has 100% recycled plastic handles. Little jumpers can burn energy and save energy at the same time!! Safe, non-toxic; contains no BPA, PVC, phthalates or external coatings. Guaranteed to produce hours of Good Green Fun!