Whether you're happy about it or not, the cooler air has blown in. It's great for exercising outdoors, but you may need a light layer over your tank top right at the beginning of your workout. You'll need something you can peel off easily after you get a chance to move around and warm up. It may not be jacket weather just yet, and that's why I love this Windproof Sport Top from HIND.
It's made of durable stretch Knit fabric called Thermalete that's windproof yet breathable. If you're chilly, you can zip the 5" zipper all the way up to your chin, or you can open it up to help you cool off. There are thumbholes for added warmth on your hands, and reflective details so others can see you.
I love that this is all one piece so if you do want to take it off, it'll tie easily around your waist. It also has a flattering feminine cut with chafe resistant flat seams so it won't cause irritation on your skin. Order it from TeamEstrogen.com for $79.95. If you want a different color than skyline blue (shown), than check out the Activa website. It also comes in Moonstone (light gray) and Phantom (dark gray).