CE Level 2 hip protectors absorb significantly more impact force than Level 1—they transmit no more than 9 kN of force in a crash, compared to 18 kN for Level 1. That means roughly half the force reaches your hips, which can make a real difference in preventing fractures.
This extra protection is especially important if you have osteoporosis, a previous hip injury, or other factors that raise your fracture risk. It's also the smarter choice for racers and freestyle skiers who fall at higher speeds or from greater heights.
The tradeoff is that Level 2 pads tend to be a bit bulkier and less flexible than Level 1, so they may feel slightly more restrictive under your ski pants. For most recreational skiers without elevated risk factors, Level 1 is perfectly adequate. But if you're in a higher-risk category, the added protection is well worth a small comfort tradeoff.