Wii Fit Premier Pak Wii Remot Holster:Lightweight elastic mesh design / Heavy-duty clip keeps holster in place / Wii Remotes buttons still accessible while in holster Protective Silicone Cover: Made of high-quality, durable lightweight silicone / Helps keep Balance Board clean & scratch-free / Secure fit helps prevent cover from shifting Rechargeable Battery Pack for Wii Fit Balance Board: Eliminates the need to purchase costly batteries / Provides up to 20 hours of gameplay / Charges via USB  Wii or PC