Micro Trauma Kit NOW! Nano refill is not just another small tactical medical kit. Each component was specifically chosen for its combat proven effectiveness combined with never before seen packaging techniques to make them as small as possible. At home, at work, on the range or in the woods the ESSENTIALS kit has just what you need to address the #1 cause of traumatic death - BLEEDING. All the essentials you need without the bulk or weight of unnecessary First Aid filler items. A true trauma kit for those who know the difference.