EmbTao Type O Positive Tactical Blood Type Iron On Sew On Patch - Khaki & Green - 2"x1" Heat seal backing. Iron on or Sew to any garment. Ironed-on patches will not come off. Measures 2 inches wide by 1 inches tall. 100% fully embroidery. Safe & non-toxic. Washable and Durability. EmbTao is the top embroidery brand for best patch. DIY in 15 seconds! Perfect for Jeans, Jackets, Vests, Hats, Backpacks and more!