This TransIt saddle/seat bag is perfect for cyclists who want to carry their essentials with them on their rides. With a medium size, it has two pockets and an expandable design, made of nylon and canvas materials in black and gray colors. It is designed to be attached to the bike seat and has a zip closure, reflective bands for safety, and a shoulder strap for easy carrying. This saddle/seat bag is a must-have for any cyclist who wants to keep their belongings safe and secure while on the go.