Colour: black/grey Patches for the following blood groups are available: A Pos (part 22APH) B Pos (part 22BPH) AB Pos (part 22ABPH) O Pos (part 22OPH) A Neg (part 22ANH) B Neg (part 22BNH) AB Neg (part 22ABNH) O Neg (part 22ONH) Three-dimensional rubber patches. The hook fastener patch on the back allows for attaching it to loop fastener surfaces which can be found on many jackets or backpacks etc. Unlike with traditional textile patches, there are no frayed edges or dirty fabrics. The rubber patches are easily washable. Diameter: 60 mm. Can be woven into boot laces, either horizontally, vertically or diagonally (slotted holes allow for different lace-hole spacings).
