A cheap sheep or lambskin glove leather, made with an alum or combination tannage, and usually given a dull grain finish. The name is taken from the town of Napa in California.
                                                            
                                                     
                        
                                                
                        
                        
                            Soft full grain leather made from unsplit sheep, lamb, or kid-skin.
                                                            
                                                     
                        
                                                
                        
                        
                            a smooth leather, first dyed in a vat of aniline, then colored with a light pigment that evens out the color and increases the durability of the leather.