Heavy duty plaid shirt jacket, high quality Deftly engineered to act like a jacket, but feel like a shirt, the Mojac is truly a living riddle of dynamic proportions. Made of 100% organic cotton flannel, and buttery soft shirt knit liner, the Mojac Dos has a rustic Deftly engineered to act like a jacket, but feel like a shirt, the Mojac is truly a living riddle of dynamic proportions. Made of 100% organic cotton flannel, and buttery soft shirt knit liner, the Mojac Dos has a rustic vintage quality right out of the box. A relaxed shirttail hem and snap closures at the chest, pockets and cuffs round out the deck, and seal the deal.