Bulletproof vests are protective gear worn on the torso to absorb the impact of bullets and bomb fragments. They are made of woven or laminated fibers that deform bullets into a dish shape, distributing their power over a large area of material to stop penetration. Soft vests use multiple layers of fabric and can protect against handgun and shotgun rounds, while hard-plate vests contain additional metal or ceramic plates for protection against rifles. While vests prevent penetration, wearers can still be injured by blunt force trauma, so specifications provide limits on impact energy transferred to the body.