BEIS The Water Bottle Sling in Black. BEIS The Water Bottle Sling in Black. Self: 100% recycled poly. Made in China. Spot clean. Top drawstring closure. Exterior zipper pocket. Carry as a handheld or crossbody. Removeable, adjustable strap with carabiner clip closure. Measures approx 3.5 W x 8.25 H x 3.5 D. BEIS-WA48. BEIS121039. 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. BEIS - 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, BEIS will never compromise on functionality or looking selfie-ready cool.