The Zpacks Classic Sleeping Bag is a high-end down bag with a 3/4 zipper and no hood. It's a hybrid between a quilt and a full sleeping bag, and hits the mark for those concerned with weight, comfort, and customization. The Classic Sleeping Bag is made with 900-fill power white European goose down, has vertical baffles on the body, horizonatal baffles on the footbox, and is overstuffed for maximu loft. The shell and liner is treated with DWR, and use Ventum Ripstop Nylon. There's an elastic loop around the collar to keep in the warmth, and the zipper opens up for quilt-like use in warmer temperatures.
Zpacks makes all bags by order, and has three widths, three lengths, and three temperature ratings to choose from. Make sure to read their measurements, and get the right bag for you.