The Mac In Sac Synergy jacket is the ultimate companion for life on the go. Its unique design allows it to be easily packed away, making it perfect for campers, ramblers, and leisurely walkers alike. Designed for warmth, Synergy brims with Thermolite Fill and 550 Fill Power. If rain does come on, don't panic, as the jacket has a water repellent outer. If the conditions change and the sun comes out, pack the jacket away and continue your activity without fuss or discomfort. With reflective detailing, elasticated cuffs and a scoop back hem add to the comfort and practicality of the Synergy, whilst its lightweight and packable nature make it a key piece for any adventure.