Top of the line leather game ballPremier, full-grain, pre-sorted leatherInnovative tanning process for enhanced durabilityRecessed Stealth Soft-Valve SystemButyl BladderNFHS approved on limited color optionsMultiple Colors Available. Construction: Leather Use: Game Size: Official Weight: Official Age Group: 12+ Skill: Professional Official Volleyball of the Pennsylvania Interscholastic Athletic Association (PIAA)Official Court Ball of the AVCA