Wells Lamont Grain pigskin leather palm with poly/ cotton twill back. Fully wrapped fleece lining insulated with our 100 gram Thermofill™ for flexible warmth. Wing thumb provides added flexibility. Leather palm designs are the work horse of gloves for the construction trades, farming & ranching, and all heavy duty needs. Added reinforced finger & thumb tips enhance wear performance as does the leather knuckle strap. Warm knit wrist with leather pull tab keeps out the cold and elements.