There are no rules or instructions about how you play with this simple, ingenious thing ??? it's free play for children in its purest, safest form. Designed to encourage creativity and imagination, it will be whatever your child wants it to be ??? you can rock it, spin it, hide in it, build a den with it. Made from strong plastic for use inside and outside, with raised, rounded edge to protect children's hands. Measures 80cmDia; height 44cm. 3yrs+.