Limbo Waterproof Covers are a self-sealing, self-supporting garment which prevents the penetration of water to plaster and wound dressings on arms or legs during bathing. They are simple and comfortable to use and will last through the average user's duration of treatment. Circumference of 39 - 54cm. The waterproof protector are comfortable, easy to use, reusable waterproof protectors which seal just above the knee and can be completely submerged. They can be used with confidence in baths, showers and pools. Measure leg circumference above cast just above the knee.