BALLY HIKE x AIRINUM Face Mask Set of 2 This is an unopened gift from an acquaintance. Please check the images from the 4th one onwards for the contents. For those who love BALLY, why not try matching masks with your partner? In addition, the AIRINUM brand has collaborated with HUMANMADE and was apparently available at ESTNATION. This is a very rare item, so BALLY fans, please consider it.