The jekyll and hyde of jackets enduras flipjak is basically two jackets for the price of one reversible design with lightweight primaloft insulation make this a highly versatile garment that looks good both on and off the bikethe two sides of the flipjak give two very different looks one wild one mile to suit your mood or situation both benefit from primaloft insulation which is extremely light and thin for how much warmth it keeps in and its keeps on insulating even when its wet t