I wanted a battery operated vest vs one that plugs into your bike so I could use it on different machines. I rode my Goldwing as cold as the high 30s and my 450L in the low 40s and it really works well. I like the color coded push button heat adjustment on the vest. The battery lasts longer than I expected, and I also like the power level indicators on the battery. I really enjoy this vest and would highly recommend it.