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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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Measures 2 inches 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 A, B, AB, O positive and negative;Indicate blood type for unpredictable accident or emergency casewide by 1 inches tall. 100% fully embroidery.Safe & non-toxic. Washable and Durability. 2. 100% Embroidered withHook backing,2 wide x 1 high.(5cm*2.5cm), Super high quality, 2pcs pack 3.

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