Premium Black Durable Soft Silicone Skin Cover Case + Large Capacity Rechargable Battery Pack for Nintendo Wii Fit Balance Board This Combo Pack Includes: One Skin Case, One Battery. Brand new non-OEM. Rechargeable 2200mAh battery for Wii Fit board. Save money and protect the environment by using the rechargeable battery. Case: Durable & flexible soft silicone material. Protects Wii fit from damage and scratches Non-slip surface is great for providing better grip to enhance gaming performance.