AA Grade leather, keystone thumb, highly flexible, the keystone thumb is the most ergonomic thumb design which is stitched separately into the palm area, Leather rolled hem prevents side seam blowout. Leather rolled hem gives the glove a good quality because those hems prevent side seam blowout or tears. This feature give the gloves a clean finish as well as comfort and durability. Double sewn index finger seam. The double sewn index finger seam gives the glove the perfect fit for the wearer. It also gives a snug fit for the wearer and superior comfort. It also adds to the durability of the glove and protection from early wear and tear, leather strap for snug fit.