In cycling, it's all about layering.  You've got to be prepared for big temperature changes.  And your layers are only good if you can fit and hold them in your jersey (read: lightweight and packable).  15 Miles in to a recent ride around Lake Tahoe, it started getting steamy. 

See how easily our Patchy Arm Warmers and C to C Vest pack down into the pockets of our Wrapture Jersey.