Two-quart re-fill bottle. Bob & Jeff Phalen, career farriers with a total of 75 years of horseshoeing the world's finest horses, created SOUND Hoof Conditioner when they noticed the need for a hoof conditioner that actually works. SOUND, an all-natural hoof product made solely of non-toxic essential fats, vitamins, and omega fatty acids is easily absorbed by the hoof and helps prevent dry, cracked hooves while at the same time repelling water during wet conditions. SOUND was the first hoof conditioner that is also safe enough to use on your own skin and has NO petroleum. To this day the majority of hoof products use petroleum and other glues that can't be absorbed by the hoof capsule. Putting SOUND on your horse's hooves is like putting lotion on your hands because it deeply moisturizes the hoof. Using petroleum-based products is like putting Vaseline on your horses' hooves, it will continue to build a barrier that will form a harmful residue over time. Sound is made by farriers who have tested the product for over 20 years. Sound will condition and protect your horses' hooves like no other product on the market can.