The military issue DPM bivy shelter is a beast when it comes to winter survival. Pair it with a tarp and you’ve got a fast, reliable shelter that keeps you warm and hidden. But there’s a trade-off—while it’s perfect for winter operations, it can turn into a sweat box in the summer. That’s the reality of military surplus gear: tough, effective, but not always comfortable. If you’re building a bug out bag or prepping for cold-weather survival, this bivy shelter is a solid option worth knowing about. ? Subscribe to The Survival Outpost for real-world survival shelter reviews and field-tested tips.