ROCKBROS Bicycle Head Bag, made of nylon/polyester fabric laminated with pvc film adhesive/100% nylon. Size: Diameter ~12cm, Center ~22cm, Expanded ~54cm. Weight: ~229g (without straps + shoulder strap)

Capacity: ~2L (plus extension ~2.4L)

Shoulder strap: ~126cm (including hook)

Closure Mode: Folded Closure / Center Zipper Opening. 2.4L large capacity to store cell phone keys and other loose items to meet the needs of daily travel. Expandable space on both sides of the traditional bucket bag. Includes a 126cm long strap for diagonal travel. See photos for more information, fast shipping from California.