Ultra Compact Seat Bag with Pro Version The ultra-compact seat bag is discreetly mounted under the saddle using a hook and loop fastening strap. Its built-in anti-slip fabric ensures secure attachment during your ride. The Pro version features a hidden tool compartment that keeps tools and personal items organized and separated. It comes with a ratchet tool and 10 bits, so youll have everything you need for your cycling adventures without forgetting your tools.