John Heinekenwrote a review of Pearl Izumi Pro Barrier WxB Shoe Covers on April 28, 2015
Familiarity: I've used it several times
Pearl Izumi USA, based near Boulder CO, designs great cold-weather gear. But even in the Pearl Izumi lineup, these P.R.O. Barrier shoe covers are special. "WxB" means: W = waterproof and B = breathable. This is a very hard combo to pull off yet these shoe covers do. Nice!
Application: Medium-weight booties for keeping your feet warm and dry while riding in 38*-65* weather -even in the rain!
Note: The material is med weight (and nicely fleeced on the inside), but these shoe covers will -not- insulate much below 40 degrees. Use heavier booties for riding below 35*. FIT: Follow the size chart. I wear a 45 euro in Sidi and Shimano. The XL is the perfect size (right in the middle).