Most professional blocks, like those from Kodiak Sports , feature a 45 ILD (Indentation Load Deflection) rating, meaning they are firm enough to prevent "bottoming out" but soft enough to cradle the body.
Foam Pit Cubes & Blocks for Gymnastics, Fitness and Training buy foam pit blocks
Foam pit blocks are the unsung heroes of extreme sports and gymnastics, turning "falling" into "flying." They are high-density, open-cell polyurethane cubes designed to swallow impact and give athletes the confidence to attempt stunts that would otherwise be too dangerous. The Mechanics of Safety Most professional blocks, like those from Kodiak Sports