BJÖRN BORG Borg Training Midlayer Jacket Black L The Borg Training Midlayer Jacket is a stylish and functional jacket perfect for your next workout. It features a full-zip closure, a stand-up collar, and a chest pocket. The jacket is made from a lightweight and breathable fabric that will keep you comfortable during your workout. Björn Borg. Avoid fabric softener to make the garment last longer. EUR 79.95 1