J. CREW Elsa puffer boot with Primaloft EUC Size 8. Hunter Green. Fabric/leather upper.Fabric lining.Synthetic sole. Meet our newest (and possibly coziest) winter boots.-Just like our customer-favorite puffer coats, these boots are crafted from slightly shiny, lightweight recycled nylon and filled with PrimaLoft, a down-alternative that keeps you warm, and keeps plastic bottles out of oceans and landfills. Basically, they're the aprés boots of our dreams, that also happen to work for any winter day.