The two best emergency ID tags for runners are the Personalized Impact Acrylic Shoe Identification Tag and the MIA·MIA Custom Watch Alert ID Tag for Safety. The acrylic tag is light at 1.5 by 0.5 inches and fits four 20-character lines, while the MIA·MIA tag is stainless steel, fits most 22mm bands, and offers up to six lines of 20 characters. When choosing, consider durability, engraving capacity, size, and attachment method. More tips follow soon.