CCM Tacks 6052 Senior Shin Guards. The CCM Tacks 6052 Shin Guards features a PE knee cap that is internally reinforced with D3O Smart Foam to provide improved impact protection. The calf is protected by a foam calf wrap that is reinforced by a durable PE insert. For security, CCM added a new and updated Lock Strap that wraps around players leg, ensuring that shin guards are staying in place. Technical description: Calf wrap - Molded PE Insert Anatomical Wrap. Number of straps: two. Liner: removable, Anatomical Segmented Shin Padding and Knee Cut-Out.