The culmination of all our efforts and technology for this year's collection. Extremely convenient to attach and remove from the bike: The bag sits securely under the saddle with our 'Fast-Fix' strap system, which tucks away out of sight. Visible at night, and sleek in the day. - 'Fast-Fix' straps allow fast and secure fixing to the saddle rails and seat post. - Large reflective areas on all outward-facing aspects. - Full welded construction. - Lightweight TPU- / PU-Coated 420D nylon material. - Tapered aero shaping with reduced strap bulk. - Hidden air removal valve. - Single, easy-open buckle.