The castelli riparo rain jacket is your jacket if youre looking for total waterproof protection in a small package ready to sacrifice a bit of breathability to get a workhorse jacket for commuting or training in the rain this isnt the cost is no object jacket of their pro race pieces but comes near to them in packability and matches the waterproofing the 25 layer fabric features a durable woven outer shell with a waterproof polyurethane membrane rated at 10 000 mvtr it packs to a small si