Blood Type Patches - Mil-Spec Monkey BLACK (A NEG) Blood Type Velcro Patch - BLACK (A NEG) Size: 2 Inch x 1 Inch Hook velcro sewn on the back You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!