Experience Unmatched Comfort with Ulle Original Slippers The Ulle Original is a distinctive, classic slipper made from 100% pure new wool, featuring a built-up insole and a non-slip sole for safety and stability. These indoor slippers adapt and mold to the foot, providing exceptional comfort with ergonomically designed support for both the heel and the foot. The genuine wool ensures warmth in colder temperatures while remaining airy and comfortable. Made of 100% natural material Orthopedic constructed sole for added support Comfortable fit for all-day wear Anti-slip function for safety Tip: Check the size chart to get the right fit! Note that Ulle's slippers tend to run a bit small, so consider choosing a size larger. The slippers will quickly mold to the shape of your feet, but we recommend at least one size up for optimal comfort. The Wonders of Wool Wool is a unique natural material with incredible properties. It ventilates, insulates, and absorbs moisture, helping to regulate your body temperature. These characteristics ensure you stay warm without getting sweaty while wearing wool next to your skin. Additionally, wool is naturally antibacterial and dirt-repellent, making it self-cleaning and low-maintenance.