A wearable protective body appliance for reducing the likelihood of injury to a wearer. One embodiment provides a wearable protective body appliance having an articulating protective shell assembly that includes one or more first shell members formed from a first material having a first hardness, and a second shell member directly connected to the first shell member and formed from a second material having a second hardness less than the first hardness. The second shell member is flexible and enables the one or more first shell members to articulate relative to one another, yet still provide impact protection. Another embodiment provides a body appliance including a padding assembly that defines a ventilation hole and includes an inner engagement member. The inner engagement member can surround the ventilation hole and can be adapted to frictionally engage the skin of a wearer to substantially prevent the appliance from moving relative thereto.