Matrix Military Spec. Blood Type Hook and Loop Patch (Type: O NEG

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1，Allows doctors and other medical personnel to know your blood type. Blood type patches are an easy way to identify what type you need Available in

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No one likes to think of it, but its a situation best prepared for. Like most bad things, it sneaks up when least expected. Fortunately, with the

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The wise front-line soldier's practice of field-marking one's blood-group on the boot-heel (typically with duct-tape and felt-marker), inspired this

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Tactical Blood Type Patches O- Negative NEG Hook

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Matrix Military Spec. Blood Type Hook and Loop Patch (Type: O POS)

The wise front-line soldier's practice of field-marking one's blood-group on the boot-heel (typically with duct-tape and felt-marker), inspired this

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