Fenwick Liquid Titanium Mask With Sound Reducing Earsis the original therapeutic mask that can help your horse relax and focus naturally.Thisdrug-freebreathable, wicking, 4-way stretch fabric makes our mask a very comfortable fit for your horse while schooling, competing, turned out, lungeing, stall rest, being shod or while traveling in your trailer.Ourtherapeutic mask can be worn 24/7, depending on your horses need. Fenwick’s therapeutic headgear is approved in many racing jurisdictions and has been used for competition in equestrian disciplines worldwide. Liquid TitaniumproducesNegative Ionswhich have been proven to make us feel better by providing us with more energy and a positive mood. Think of when you are at the beach and theair smells so clean, or after a rain shower and everything seems so fresh. Thisgives you an idea of whatnegative ions can do for you.Then,think of how you feel being in a centrally heated or air-conditioned office all day, every day.You can’t wait to get outdoors andbreathe fresh air! A horse living in a stall in a city is like us being in an office all day and night. Statistics have proven that when ionic air purifiers are used in offices, people’s performance is 25% higher. Wecan only absorb 15% through breathing, but by using the skin to absorb negative ions, we can absorb up to 100%. Fenwick’sLiquid Titaniumtherapeuticsmart fabric is specially formulated to allow the continuous washing and drying of the product without diluting the qualities. This performance fabric functions equally as well on a wet horseas a dry horse. Also, there is no limit to the length of timeone can leave themask onthe horse.During the testing stage of this product, themask was successfully left on horses overnight with excellent results. Fenwick LT Mask Size Chart Sizing Measurements: There are 3 important measurements when sizing a mask for your horse or pony. The distance between the eyes, the circumference toward the bottom of the cheek bone (depending upon your horse’s conformation) and the length from behind the poll to the center of the face using the bottom of the cheekbones for a reference. Mask Sizing XSmall Small Medium Large Xlarge Between Eyes 3″ 3″ 4.75″ 5″ 5.5″ Poll to bottom of mask 13″ 13.5″ 15″ 16″ 17″ Circumference at cheek bones 18″ 20″ 21″ 23″ 24″ ***Measurements are approximate as masks are hand made in USA. Atight, compression-type fit is not necessaryfor effectiveness. XSmall:ponies, weanlingsSmall: ponies,yearlings, Morgan,ArabiansMedium:refined quarter horses, small thoroughbredsLarge:thoroughbreds,standardbredsXLarge:larger heads,warmbloods Ear Height XSmall 4″ Small 5″ Medium/Large 6″ XLarge 6 1/2″