Random sizes random patches !!!! For More Details On What "Hook" Means For Hook Backing Please Google. We Can Not Use The Word Velcr*. * Star Being an "O". Due to Newer Trademark Infringement rights. But Basically its the Hook Part of the Velcr*, Not the Loop Part. So Yes This Item is Velcr*. Product Details: - Patches With Hook Backing - 3x2" Sized (Length x Height) - 100% Embroidered - 2 Year Warranty No Questions Asked - 100% Satisfaction Guaranteed "OR YOUR MONEY BACK" - Veteran Owned & Operated Business Since 2011 Discount Info: -Buy 1 Get 1 Patch Half OFF (Any Patch Of Equal Or less Value) Must Request For Discount If not Automatically Submitted Shipping Details: - All Items Ship Within 48 Hours From Hubert NC - Shipped VIA USPS, Tracking Included If you choose First Class Mail. - All Items Ship Via .69 Cent Postage (Delivery is 5-6 Business Days) ****Unless Other Upgraded Shipping Option is chosen @ Checkout!