As an Oregon-based company, YOUKI has produced eye masks for napping for several years, providing customers high quality unique products, and YOUKI practices sustainable methods and continues to support new innovations. We choose to work with sustainable materials, like combed cotton, bamboo, and organic cotton, so that our eye masks are eco efficient and breathable which makes napping for long hours ever more relaxing. We implement the best fitting and light blocking eye technology so that every mask borders the face perfectly. All of our products are with YOUKI's highest standards of quality which sets YOUKI eye masks apart.