To understand the types of materials that are best for shock absorption, it’s important to understand shock, why it's important & how it's absorbed.
The Expert's Guide to Energy Absorbing Lanyards
Shock Absorber - an overview
What are the options for shock-absorbing and vibration-damping
Metamaterial absorbs shocks better than metal - ASME
What are some material to dampen shocks and impact? - Quora
The Best Protective Packing Materials for Moving
Shock Absorbing Sorbothane: School Curriculum Sets
Substances That Absorb Impact for Science Projects
What is the material used for making shock absorber? - Quora
Periodic Architecture for High Performance Shock Absorbing