Made of ballistic nylon, with padded interior, and semi rigid inter-liner (between outer nylon & inner padding). Also contains a premium quality key ring, thick ergonomic premium zipper pull, and quality non kink / non conductive zipper. The expandable strap accommodates a variety of battery sizes, and sewn on nylon loop allows attachment options besides using the included key ring.
3" tall x 2-1/2" wide x 1/2"(flattened) -to- 1"(expanded) depth
*Fits battery sizes up to 18650 (2).