Inserted or attached protectors
On most protector backpacks, the protector sits in a slot directly facing the back wall of the backpack – behind the hydration bladder, if you’re using one. It is usually a large plate that is fixed in place to prevent slippage. Different materials are used to make them, but what they all have in common is that they absorb shocks and distribute acute forces across a larger surface. Be aware, however: there are backpacks with so-called multi-impact protectors, and also those that remain permanently deformed after a fall and have to be replaced. There are advantages and disadvantages here: multi-impact protectors carry significantly more weight, while other protectors must be replaced after each fall. The more suitable system for you also depends on how often and how long you are on the road.
Some manufacturers are now moving towards permanently attaching the protective elements to the outside of the backpack. This way, protection is directly integrated into an ergonomic and ventilated carrying system, like Evoc does with Airshield Back Protectors .
To ensure that the protector is in the right place in the event of an accident, the backpack must not slip. To prevent this, manufacturers sometimes use particularly wide shoulder and hip belts. Rubber linings can provide additional grip. The part that rests on the back is most similar to normal backpacks with padding and ventilation channels.