DESIGN & ASSEMBLY: Spikeball is a fun, active, and competitive (if you want it to be) game played with rules similar to volleyball Download the free Spikeball App to find nearby players and game The Spikeball Pro Set is the official set of the Spikeball Roundnet Association Built with sturdier body design keeps the set stable and net taught during the harshest of plays A new material and added texture on the Pro Balls help players add topspin on their kills and back spin on their drop shots Legs easily attach to net rim Net hooks tightly onto rim with conveniently placed hooks USES: Play on any surface: grass, sand and indoors INCLUDES: Durable Spikeball set with 33% stronger legs and rims 2 Pro balls Ball pump and gauge Spikeball rule book to ensure you're playing at tournament standards Convenient and durable carrying bag