BEIS The Seatback Organizer in Black. BEIS The Seatback Organizer in Black. PVC exterior with poly fabric lining. Folding design. Interior slip and zip pockets. Measures approx 12.5 W x 7.5 H. Imported. BEIS-WA13. BEIS019137. After countless trips and #Shaycations, Shay Mitchell realized that she wanted to create amazing, affordable pieces for travelers like herself and everyone inspired to seek new places, meet new people and share the world. BEIS began with the promise to give everyone the opportunity to pack up their stuff and hit the road with bags and accessories that wouldn't break the bank. From the gym to Jaipur, BEIS will never compromise on functionality or looking selfie-ready cool.