The perfect commuter over jacket. Blindingly reflective on winter nights and it will keep you bone dry. Lots of useful pockets and velcro zip covers as well as a breathable inner lining. More substantial but much more breathable than a simple rainwear layer. You won't feel sweaty or clammy. Size small. Meant to be worn over a jacket. Manufacturer states that Small = 40-42" chest. (see other biking items being listed)
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