- Elastic boots - Handcrafted in Portugal - Pull-up leather exterior (tannery: Spain) - Leather lining - Rubber sole Pull-Up" is a high-quality leather with magnificent color variations. The color of this leather lightens when stretched. So, from the very first wear, the color nuances will evolve to give your shoes a unique look. Caution: we strongly advise against applying cleansing milk to this leather, as it may cause the color nuances to fade.