BEIS The Travel Crossbody Bag in Black. BEIS The Travel Crossbody Bag in Black. 100% polyester. Top zipper closure. One main compartment. Interior zipper pocket and slip pocket. Elastic key leash inside front zip pocket. Front slip pocket and back zipper pocket. Detachable and adjustable shoulder strap. Measures approx 10.25 W x 5.9 H x 1.96 D. BEIS-WY409. BEIS139501. After countless trips and Shaycations, Shay Mitchell realized that she wanted to create amazing, affordable pieces for travelers like herself who are inspired to seek new places, meet new people, and share the world. BIS - pronounced base - 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, BIS will never compromise on functionality or looking selfie-ready cool.