FOLDABLE: This bag can fold from original size down a small carrying pouch, collapsible for easy storage, very convenient when traveling. Perfect as an extra "in case" duffel bag when you have a trip, as well as suitable for gym, sports, hiking, camping, travel, etc.
DIFFERENCE BETWEEN SMALL & LARGE: SMALL: 17.7" * 10.6" (length * diameter), has a layer of lining for better waterproof feature. LARGE: 20.5" * 11.8" (length * diameter), has a extra shoe pocket on bottom for additional needs. (Pls pay attention to the size difference between large and small. And small bag doesn't have extra shoes pocket.)
WATERPROOF: Specially coated with a waterproof layer on the inside layer, keep your stuff dry and safe when encountering rainy day occasionally.
DESIGN: Detachable and adjustable shoulder strap, dual top carrying handles with an attached padded Velcro wrap, zipper main pocket, side pockets with buckle.
DURABLE: Made from 600D tear-resistant Oxford cloth, lightweight, highly wearable, and waterproof. Durable bag to easily carry your needs like shoes, clothes, racket, basketball, phones, tablet, date lines, keys and so on.