These are Powerisers, they are pogo stilts that allow one to jump higher and take longer strides than possibly imagined. Its pretty tough to learn at first as well as pretty tiring but they are really fun and you will get weird looks every time you wear them haha. Anyway, the retail price is 300$ I am selling for 150$. They are in great condition except for a small break in the protective foam, I have applied "tire socks" to the bottom of the stilts because without these cutouts the stilts bottom piece will wear out and then you have to buy new ones, with these socks,I dont think they will wear out anytime soon. Let me know if you are interested.