Heavy duty, waterproof (IPX3) trunk bag made from durable tarpaulin material Equipped with Basil`s Universal UBS system and compatible with all rack types Interior roll top closure with buckles ensures your belongings stay dry in any weather Padded interior compartment for phone or camera keeps expensive necessities safe Removable shoulder strap allows easy transportation off the bike Shock cord top is perfect for securing and extra bottle or jacket Reflective accents and light mounting points aid visibility and increase safety