Easily fits my size 9 adventure boots inside, keeping the dust, spiders, and nosey pets heads out. Large mesh pocket for gloves. Small zipped pocket, where I keep the carry strap. Air vents at the top. It's not got soft padding like their helmet bags, but is thick polyester; this is very easy to clean. It's not an essential item, but now I've got it I wouldn't go back to not having a boot bag.