On a recent multiday ride with highs around 40 degrees, I froze my behind off. My buddy who was wearing his Synergy liner complained about being too warm while I was shivering nonstop. After that trip, the first thing I did was order a Synergy liner for myself.
I have to give the liner 3 stars for quality because when it first arrived, it seemed to put out little to no heat. I sent it back and received a replacement. There is no question about it working now. This thing generates enormous amounts of heat. Even with temps in the 30's I can't set it on more than the lowest two settings. On high this liner will cook your Thanksgiving turkey. Even turned off, the Synergy is surprisingly warm thanks to it being windproof and well insulated.
If you do any cold weather riding, do yourself a favor and purchase one of these. For too many years, I rode uncomfortably in the Winter but not anymore.
I wear large tee shirts and jackets and the medium heated jacket fit me with the correct contact. Size chart spot on. Hands down the best accessory I have bought in 40 years of riding. Why did I wait so long. Rapid even heat. Comfortable. The added poly fill insulation is enough without heat on marginal days. I never use my zip in liner anymore.
This is definitely something you should invest in if you do any cold weather riding. The jacket alone will keep you very warm ( but not too hot ) on the low setting and also does well at keeping the wind out. Will be adding the gloves and pants after trying this jacket! Thanks Dennis Kirk for the quick shipping! received it a day early :)
As the title states, should have purchased this jacket a long time ago. Instant heat, end of story! T-shirt, jacket and my outside shell jacket is all that is needed. I was skeptical at first, but a couple 6 hour rides in 50 degree rain made me a believer. Cold rain, warm body. Will be adding the pants soon. Excellent investment. Buy one!