Buff Urban Denim: The most stylish, comfortable and warm Introducing Buff Urban Denim, the ideal complement for the coldest months of the year. This attractive Buff for dogs is made of high quality Denim fabric, and a sheepskin interior, to ensure warmth and comfort. The unique design of this Buff and its opening to tie the strap to the collar, make our Buffs the perfect choice to add a touch of style and personality to your pet's accessory this winter.