Coalatree’s Puffy Kachula is a quilted blanket featuring Primaloft insulation that looks quite a bit like an old poncho liner, except that it integrates a hood as well as snaps around the edge. This allows you to snap two Puffy Kachulas together.
I’m not in love with the color offerings, but you might find something in there you like.
Get yours at Kickstarter.com.