Stable and secure mounting - Two adjustable rail systems keep the bag firmly in place on the bike - Straps are long enough to snug it tight against both the front tube and the top tube - Straps are made of non-slip soft leather to reduce friction on the bike frame Easy to access - Double zipper design for simple opening and closing - Two zippers are connected by a high-quality nylon cable for smooth operation and quick access to your items Thoughtful details and protection - Reflective printing logo enhances visibility for night riding - Inside features a 2 mm thick material that is soft and elastic, providing excellent shock absorption and protection for contents Slim and precise fit - Contoured shape keeps the bag close to the frame - Only 2.4 inches wide, designed to perfectly fit your bike frame - Your legs won’t touch the bag while pedaling Applications and use scenarios - City commuting and running errands: secure storage for essentials with quick access via the double zipper - Short rides or light off-road trips: the soft interior offers shock protection to keep items safe - Night riding: reflective logo enhances visibility for safer rides Compatibility and performance - Slim profile and contoured design ensure a snug fit on standard bike frames - Wide-adjustment rails and non-slip leather straps provide reliable stability during acceleration and braking Keep in mind: the bag is designed to fit a typical bike frame with a slim 2.4 inch width and to stay out of the rider’s legs while pedaling.