KINCO INTERNATIONAL 901T Heat Keep Thermal Lining Premium Pigskin Leather Mitt, Work, Gloves, Medium Durable pigskin leather Heat keep thermal 5-finger lining for those really cold days Reinforcing leather palm patches sewn with draylon thread Pigskin 'breathes' so the gloves will dry soft after getting wet Note: may not come pretreated with waterproofing, If not pretreated will come with packets of Nikwax to be applied