Lightweight and flexible personal protective padding systems for the protection of joints, bones and muscles, where one embodiment includes a hard outer shell structure as shielding, a gas filled compartment or bladder to stabilize the system and absorb and disperse impact energy and/or a web structure suspended across opposed peripheral edges of the outer shell and between the shell and user's body to absorb energy and to provide ventilation. Hybrid structures include both the bladder and web structure.