The nickel gray Battery Holder 4 from Think Tank Photo holds four standard DSLR or Mirrorless camera batteries. The compact design fits easily in your bag or pocket. It has a loop so you can also attach it to your belt or bag strap. When empty the case can be folded flat for easy storage. Made with durable, weather-treated, double ripstop material, it has a fold over hook-and-loop closure to keep your batteries safe.