Seat pack that installs without tools on seat post and saddle rails The color of the valve is low-profile black and the bungee cord has been updated to an eye-catching orange. The air release valve has been newly designed with a pull string that allows you to open the valve easily with one hand. The 3.3 gal (11 L) size has also been added to add bungee cords to increase the storage capacity of frequently used items such as jackets. Interior side reinforcement prevents bag from swinging while riding. There is a loop that can be attached to the rear light and a reflector for safe riding at night. Seat pack that installs without tools on seat post and saddle rails The color of the valve is low-profile black and the bungee cord has been updated to an eye-catching orange. The air release valve has been newly designed with a pull string that allows you to open the valve easily with one hand. The 3.3 gal (11 L) size has also been added to add bungee cords to increase the storage capacity of frequently used items such as jackets. Interior side reinforcement prevents bag from swinging while riding. There is a loop that can be attached to the rear light and a reflector for safe riding at night.