Perfect for cold winter days! The Upsalla model from BIRKENSTOCK is a sober boot with a warm lining. The buckle at the end of the shaft adds a touch of originality. The upper is made of particularly soft suede leather that drapes over the foot like a second skin. Removable anatomical cork and latex footbed Upper: lambskin leather lined with lambskin fur Insole: natural leather Outsole: lightweight sole made of synthetic materials Made in Germany " footbed Compatible with : Suede leather spare footbed Natural leather spare footbed Lambskin fur spare footbed