Crack [portable] - Core Impact

The best crash pads and industrial bumpers use a dual-density or triple-density layup. A soft top layer deforms and spreads the impact force over a wider area, protecting the stiff core layer from point-load cracking.

Since you likely don’t own an X-ray machine, here is a practical field inspection guide for gear and equipment: core impact crack

The term "Core Impact Crack" is most commonly discussed in bouldering. A bouldering crash pad is a foam sandwich designed to absorb the kinetic energy of a falling climber. The best crash pads and industrial bumpers use