A multi-purpose hoof aid, the Tubbease Sock "breathes" to prevent the damaged hoof from softening during treatment. Various remedies can be used under the sock for ailments such as abscesses, canker sores, sore toes, thin soles, injuries, cracks, and general deterioration. Washable and reusable. The optional EVA insert can be used to relieve pain for the horse and extend the life of the Tubbease. (Item # 3761 Tubbease Sole Insert) Size/Color Measurements: Small/Pink: Maximum internal diameter 4.331 in (approx. 4.25 in)