Reebok 12K Youth Shoulder Pads. Reebok 12K Youth Shoulder Pads. Construction: Low-profile with improved coverage and reinforced body to provide outstanding protection Caps: Low-profile JDP with molded PE caps for excellent protection. Biceps: PE inserts with one-piece floating, one-piece adjustable for custom comfort fit. Torso: Molded foam with PE inserts at sternum, kidney, ribs and spine. Shoulders: Fixed PE inserts are lightweight, comfortable and highly protective.