Kriega Back Protector Insert

The ultra-lightweight back protector slots into your backpack to offer the highest CE-approved level of protection. The fit and forget insert provides impact protection whatever you wear under your backpack.
The RHEON™️ patented algorithmic design mimics how cells are packed in nature. It helps materials to be lighter, naturally. At the core of RHEON™ technology is an energy-absorbing super polymer. It is soft and flexible in its natural state but absorbs energy by stiffening when subjected to force.
It is soft and flexible when in its natural state but stiffens dynamically on impact to dissipate significantly more energy than conventional static materials.
This property provides a breakthrough for applications where flexibility and movement are paramount but high levels of energy control are a must.