Pearl Izumi Summit Shell JacketWeather in the mountains can change at a moment's notice. The ultralight 110g Pearl Izumi Summit Jacket packs up small enough to go with you on every ride and will provide reliable wind and water protection if the weather turns to the worst. The thin small hood will easily fit under your helmet and the full-length zipper will improve warmth or ventilation depending on where it sits. When the weather clears up, you can easily stuff the jacket back into it's small pocket.FeaturesBarrier Lite fabric is lightweight and windproofEco-friendly C6 water resistant DWR treatment sheds precipitationHood designed to fit under-helmet without interfering with fitTwo-way YKK Vislon front zipper for easy ventingInterior envelope pocket doubles as stuff pocket to pack jacketPacks down small enough to fit in a jersey pocket or disappear into a packBioViz reflective elements for low-light visibilitySizingSizeSmallMediumLargeExtra LargeXX-LargeChest (in)35.5 - 37.5"37.5 - 40.5"40.5 - 43.5"43.5 - 47.5"47.5 - 52"Waist (in)29.5 - 31.5"31.5 - 34.5"34.5 - 37.5"37.5 - 42"42 - 47" | Pearl Izumi Summit Shell Jacket Men's Size Small in Black