Sparco Storm ADV Glove:   The features outside stitching and the "Flat" application of HTX material treatment.  HTX is a natural fire-resistant resin that has been designed into the glove for a  guarantee rigidity and grip on the palm of the glove. In fact, excessive deformation of the fabric can reduce driving sensitivity. 
The incisions have been positioned to favor the natural movement of the hands and bending of the pre-formed fingers as much as possible. 
The padded reinforcement on the knuckles protects the driver's hands from violent contact with other parts of the driver's cockpit.