Xpert Equine Restoration Equine Mask REM Mask Double Eye Mask Facilitates the Melatonin Rise Needed for Rest/Recovery Use on Horses Stalled Indoors Where Lights Stay On Xpert EquineRestoration Equine Mask ("REM Mask")Double Eye MaskFacilitates the Melatonin Rise Needed for Rest/RecoveryUse on Horses Stalled Indoors Where Lights Stay OnAids Horses with Eye InjuriesEases Travel AnxietyREM  The newest cutting edge technology is featured in the Restoration Equine Mask (REM Mask) by ExpertEquine. Using blue light blocking technology to promote natural production of melatonin for a more restful night of sleep while being exposed to artificial light, the REM Mask ensures your horse gets a good night's sleep even with the lights on. This facilitates the melatonin rise needed for sleep and recovery, improving overall performance. Developed and tested by veterinarians.