T-Foam Ear Plugs provide the ultimate in comfort and performance for your horse. Produced using the same custom-fit technology as used in human ear plugs. Heat reactive, softening with body temperature and becoming more comfortable with use. Trim to fit the ear canal if necessary. Twist into tight cylinder and place deep into ear canal with the colored side up. T-Foam will expand and fill the ear canal to create a tight seal. Remove after each use. Warm in hands before use if hard due to cold weather.