The Composite Matrix mount clips to saddle rails without touching the seatpost. Lezyne's Micro Caddy QR uses this approach so the bag hangs behind your saddle rather than strapping underneath it, which keeps it clear of dropper post collars and eliminates the thigh rub that happens when bags sit too low. The quick release mechanism lets you pop the bag off with one hand, which works if you run multiple bikes and want to move your flat kit between them.

The woven nylon construction holds its aero shape rather than sagging when loaded. Internal organizational pockets carry labels so you know where your tube goes versus where your CO2 cartridge sits. The external multi-tool sleeve sits on the underside of the bag where you can reach it without opening the main compartment, which saves time when you need to make a quick adjustment at a stoplight or trailside.

The water-resistant zipper includes a large pull loop that works with gloves. Reflective piping runs along the edges to catch headlights from behind. The bag measures either 135mm or 150mm long depending on whether you run the small or medium size, with both versions sitting 110mm tall and 65mm wide. The aero taper keeps the bag from catching wind when you're up to speed.... Read More