The SILCA Mattone WEB adapts its volume to whatever you carry

The SILCA Mattone WEB Seat Pack is the most adaptable and affordable pack in SILCA's Mattone lineup, built to mount securely under your saddle and deploy fast when you need a tool or a place to stash a mid-ride find. It pairs semi-elasticized stretch mesh gussets with a 360-degree ripstop nylon chassis, so the pack expands to hold what you load in and cinches back down to an out-of-the-way profile when it is light.

A high-tension BOA Closure System on a Hypalon strap dynamically adjusts the pack's volume and locks it in with zero migration, even on rough terrain. The dual open-guide release makes getting on and off the bike quick, and the whole thing weighs just 77g. If you want a simple, secure, expandable seat pack that stays quiet and ready for the ride, the Mattone WEB is the easy pick.