You're going out on a group outing to a rooftop bar in October, it's 78 degrees during the day but will likely dip into the 60's after the sun goes down. You have to go to work before heading to the bar and the office is a balmy 76 degrees thanks to Charlie and Jane, the two perennially cold people who are friends with the office manager. How does one prep for this? Easy- pack this J.Crew cashmere sweater in your bag and be prepared for it all. Its super soft, and goes with almost any shirt you need to layer, collared or not. The only rub with this is that it's dry-clean only, so keep that in mind the next time you go to the cleaners. Plus a cashmere sweater for under $100 is a pretty decent find, so snag this while you can, and be prepared for your happy hour chill out.

Available on jcrew.com for $98

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