I dont know the brand name, but there is out there emergency sleeping bags made of the space blanket material. I saw one last week for 4 bucks at a surplus store. I used one winter before last and it worked well. I put one of my bags inside it and it worked well(i only had a 40 degree bag and it was hitting the low 20's)
Regular space blankets are an almost must have, tiny and never know when a couple can save your ass. makes a good windbreak/fire reflector in the woods too.
Last winter i ran across a 70% wool blanket at walmarts says it was made in the USA for ten bucks. king sized. it worked very well.
Wool sweaters like the old british commando and USMC issue ones, the green ones with the elbow patches. The navy used to(they may still) have the same sweater in blue.
Silk is very good because it does not chaffe your skin.
Old m65 field jackets with the quilted liner makes a good outer layer.
gloves, gloves, gloves! not leather.
Polypro/thermax/thinsulate socks against your feet with wool socks over them.
Mil issue bivy with whatever you can stuff inside them. space blankets work good inside the bivy.
Believe it or not, a lot of christmas wrapping material has a shiny backside. If it does, it is usable as reflective insulation and makes jam up good shelter insulation and fire reflector material.
Construction workers use a headpiece that they either attach to the inside of their harhats or just wear on the head. They work very well. Have a chinstrap to keep them secure on your head.
If you have plastic sheeting it works well as a fire reflector/windbreak.