roswheel 131414 131372 bike cycling bicycle storage tail bag rear seat saddle bag pack pannier sack 8l 10l mx200717

features: constructed by quality polyester fabrics, durable use; roll-up closure rather than zippers, volume adjustable; with light reflective and marks, visible at upcoming light in dark; mount by hook/look strap, tools specifications fabric: 100% polyester lining: 100% polyester structure: 1*main compartment bag volume: 8l or 10l per order option, volume adjustable dimension: please refer to the below graphics mount on bike: seat and post mount by: buckled belts and hook ...