This super - compact mini dry bag by Castelli is the perfect addition to your bike. It attaches neatly under your saddle, offering handy storage for all your essential tools and accessories. Crafted from water and stain - resistant materials with a water - resistant zipper, it shields your gear from rain, mud, and other elements. The adjustable hook and loop attachment strap fits every saddle size. Inside, there's a storage pocket to keep your items well - organized. And the reflective accents on the outside boost your visibility during low - light rides.

Using this Castelli dry bag is a breeze. First, adjust the hook and loop strap to fit your saddle size, then attach the bag securely under it. You can put small tools, keys, or other essentials in the internal pocket for easy access. When it comes to maintenance, just wipe it with a damp cloth if it gets dirty. Avoid using harsh chemicals as they might damage the water - resistant materials. Make sure the zipper is fully closed before riding to keep your items dry. Also, check the attachment strap regularly to ensure it's still tight and the bag won't fall off during your ride.