The bag features a large, expanding section, three external pockets and a transparent pocket for a GPS unit or cellphone. Damp-protected grommets for charging and headset cables. Made from 900 D Nylon and lined with 210 D Polyester. 4 magnetic brackets and base with anti-slip function. Rain guard and carry strap for use as a backpack supplied. Dimensions 400 x 260 x 260 mm.