This seat bag features an aerodynamic wedge shape that allows it to glide smoothly through the wind. The internal pockets are a great design, keeping your tools separated from inner tubes and other delicate items. The weather-resistant covered zippers ensure your belongings stay dry. Made of 1000-denier Cordura Plus and 1200D Polyester, it's durable. It has a fitting for a taillight and a 3M reflective strip for better nighttime visibility. Available in medium (7.5' x 3.7' x 3.9') and large (9.1' x 5.1' x 5.5') sizes. With a total volume of 40 in3, it attaches via straps. It's black in color, not waterproof, has 1 compartment, and weighs 100 g.

Using this seat bag is easy. First, use the straps to attach it securely under your bike seat. You can put your tools in the internal pocket to keep them separate from more delicate items like inner tubes. When it comes to the taillight, just fit it into the designated fitting for better safety at night. As for maintenance, since it's not waterproof, try to keep it out of heavy rain. If it gets dirty, you can gently wipe it clean with a damp cloth. Don't use harsh chemicals as they might damage the 1000-denier Cordura Plus and 1200D Polyester materials. Check the zippers and straps regularly to make sure they're in good condition.