What Our Gearhead(R) Experts Are Saying:"I keep the Core Rain Jacket stuffed in my saddle bag year-round. It's super lightweight, actually waterproof, and has enough breathability that I don't feel like I'm in a sauna when climbing in a squall."Rain in the forecast? No problem. The Core Rain Jacket is our go-to layer for staying dry and visible when weather rolls in mid-ride. Built from a lightweight 2. 5-layer fabric with fully taped seams and an AquaGuard(R) front zipper, it blocks out wind and rain without weighing us down. We love how breathable it feels thanks to underarm vent holes, and the new elasticated hem offers a more secure, stay-put fit in motion. Reflective details on the arms and back enhance visibility in low light, and the whole jacket packs down small enough to live permanently in our jersey pocket or saddle bag.