A 3mm insole can resist a 15kg shot put

Shock of a drop from a height of 1 meter

This miraculous effect is due to the

Application of artificial cartilage bionic energy absorption technology

Researchers inspired by micro-nano structures that mimic human cartilage

By designing and tuning molecular solids ranging in size from 20 to 200 nanometers

make it into a brush-like ultrastructure

When impacted by external force, thousands of brushes rub against each other to generate heat energy

Absorb 90% of the impact energy through energy conversion, reducing damage to human bones.