A more perfect compact saddle bag has yet to be sewn. The EVOC Seat Bag comes from years of construction expertise that EVOC has making larger backpacks and travel bags and is precisely applied to this saddle bag. Even in the 0.3L size, you're able to fit a road bike tube, a small multi-tool, patches, and even a Co2 canister and inflator. A water repellent fabric, and water-resistant zipper help to keep the contents of the bag dry in light rain and muck and secure. With their design expertise, EVOC eliminated the need for a seat post strap, which helps to protect your seat post, whether it's carbon, aluminum, or a dropper post. The buckle and strap function both for securing the bag to your saddle, but also as compression straps to make sure the bag doesn't jiggle while riding. The loops on the top of the bag also allow you to strap other items to the bag if you need to carry extra and don't want to stuff your pockets full. EVOC guarantees their product from manufacturing defects for 24 months from the date of purchase, but that doesn't include pieces that are subject to normal wear and tear from use.