MILLET Millet Odyssey 60+10 Rain cover included Used about 3 times and stored for about 9 years. There are no noticeable stains or damage, but the inside is starting to feel a little sticky. There is no delamination due to hydrolysis at this time. Back adjustment is possible from size S to XL. The main storage space can be divided into two layers with a zipper. There are also large storage spaces on both sides. Although I haven't used it, it is hydration compatible. Please purchase if you understand that this is a used item.