Tritats Select Tattoo, Pack of 200 (Black, 1.75-Inch) 200 - 1.75" black temporary tattoo numbers, in a red zippered case For body markings for triathletes Triathletes can self apply the numbers the night before an event Tattoos are uniform and easily read by race officials, media, photographers and spectators TriTats are durable and can last up to a week, but may be easily removed with baby oil or rubbing alcohol