Anders R.wrote a review of Castelli Tempesta Shoecovers on December 19, 2017
I ride year-round in rainy Vancouver, and these are the best -- though by far the priciest -- booties I've ever used. They keep my feet almost completely dry in 2 - 3 hr. rides in heavy rain; at the end my shoes and socks are only a bit damp, probably partially from sweat. Note I use waterproof, breathable, full-length pants that completely cover the tops of the booties so no water comes in from the top. As others noted, they fit VERY snugly, to the point it takes 2-3 minutes to put them on, and can be difficult to zip up completely, so try before you buy. (I use Sidi size 43.5, the booties are size XL, and I wish I had tried XXL. Castelli says size L should fit; I tried an L pair and they were virtually impossible to get on.) Once on, they've very comfortable, a bit snug around the ankle but this doesn't bother while riding. Overall, I'd buy them again. But only on sale!