Definitely light weight - Marmot PreCip Jacket - Women's

I found the sizing to run small. I usually wear a medium, and I bought a large in this jacket and it was snug in the shoulders and across the back. If you have any muscles in those locations, this jacket will be tight on you. Too, the sleeves are too short. I am 5’11” tall. Other than these considerations, the jacket is actually water proof, or at least water resistant, and it has PIT ZIPS to help with venting heat during exercise - like running or bike riding.