SPRI 55cm Anti-Burst Weighted Performance Ball by SPRI at Fleet Farm
Amazon.com: SPRI Dead Weight Slam Ball - Durable Sand-Filled No-Bounce Heavy Duty Ball for Tossing, Slamming, Core Strength Training, Endurance, and General Fitness - Easy to Read Weight Label - 15 lb :
Medicine Ball 12 lb - Gaiam
SPRI ELITE Training Exercise Ball From Babes & Barbells Fitness
Spri Stediball
SPRI Weighted Stability Exercise Ball, 55cm, Blue - Walmart.com