The Sportsman Blankets seems to be identical to the Trekmates Thermo Blanket, which I found at a discount store along with some luminous nylon rope for about $13 the other day. I also picked up a discounted Trekmates Travel Towel (useful for cold conditions to wring out wet clothing), stainless steel hip flask and Trekmates Mosquito net (another important consideration for a survival kit, which is not often mentioned)

This is a much more heavy duty and robust solution to the Mylar space blanket or a AMK Heatsheet blanket. It could be a very flexible bit of kit, i.e. a groundsheet, a fire reflector lean-to Tarp shelter, a RADAR reflector, a marker panel, a tent groundsheet protector and a solar shade reflector. The additional weight (360 grams) and bulk seems to be well worth it and the 4 corner grommets allow easy and flexible staking out with the comfort of knowing that the shelter application isn't going to fall apart during the night due to stormy windy conditions.

Pricing is very good as well considering the benefits.