| http://www.w3.org/ns/prov#value | - The flexible inserts 510, 511, and 513 can be used in a similar shell construction for athletic or military protective equipment or armor like face masks (which can be attached or integrated into the helmet), neck, shoulder, chest, hip, knee or elbow, shin and forearm guards, thigh or biceps guards, groin, hand, foot, and other guards, pads, protectors, or armor.
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