https://psihoops.com/psikohoop/ for details and tutorials ~28-29” diameter psikohoop (originally $800) Smart LED hoop with internal mechanism to respond to your movements - changes patterns based on how you flip/program it. I no longer have the moves manual but you can find it all for free on the psi hoops website !!! + tutorials :) Great hula hoop for performers. One of the only waterproof LED hoops I’m aware of available on the market ! Collapsible 3/4” tubing Very durable high quality hoop Charger included (plugs into reg outlet) Special hoop with lots of features - check their website for detail !!! PSIKOHOOP <3 Instruction booklet: https://psihoops.com/wp-content/uploads/2017/07/psikohoop-booklet_JUNE_2017A2.pdf Also great for anybody who does long exposure photography;)