Olive Drab O POS O+ NKA Blood Type OD Embroidered Fastener Patch<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Size: 1.8 x 1.8 inches / 4.5 x 4.5 cm (aprox +/- 5%) </span></li><li><span class="a-list-item"> High quality patch perfect to be worn on uniforms， tactical equipment， vests or jackets </span></li><li><span class="a-list-item"> Double-sided Fastener backing (hook and loop) </span></li><li><span class="a-list-item"> NKA = "No Known Allergies" </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51tOrvpETwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61ESE3O5i7L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/616pT9VwcwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61S9C8BKV1L.jpg" noproxy>