Ironcompany 200 lb. Super Heavy Slam Ball for Strength Training, Strongman Training, and Atlas Ball Lifts 15" Diameter Shell. Color: Blue. Non-Bouncing. Firm textured surface for better grip even with sweaty hands. Dense 5mm wall to prevent blowouts while slamming ball to the ground. Large easy to recognize weight value. Non-clumping sand and metal shot filler material. 1 Year limited warranty against manufacturer defects.