From http://www.sewaholicpatterns.com/:
"The perfect layering piece! Wear it over sports bras and knit tops, wear it under jackets, or wear it on its own. Cool details make this more than just a simple sweatshirt top.
View A features contrast yoke and sleeve panels that come to a point at centre front and centre of the sleeve, and long sleeves. View B has a plain front, crew neck, and three-quarter length sleeves. It's a great go-to basic! View C has a set-in collar detail that has the appearance of a separate collar, but won't flip up or shift around. This collar is guaranteed to lay flat! View C has elbow-length short sleeves. All views have a plain back with no seaming or detailing so your movement isn't restricted.
Instead of standard machine-stitched hems, the sleeve and body hems are finished with fabric bands. These banded hems are easy to sew and finish the edge in a professional-looking way.
Easy to sew - no serger required!"