The super lightweight sleeping bag system

Everyone wants to be nice and warm while sleeping, but ideally, it shouldn't be too heavy and bulky. The STEALTH PRODUCTS GROUP has a 4-season sleeping bag system that really surprised us. We were able to test the "All Season Sleep Shelter System" already.

Yes, this is the complete system. Sleeping bag, poncho, and bivy sack. Including a stuff sack, it weighs just over 3 kg and measures around 40 x 25 x 20 cm. Many will now say, my sleeping bag system has that too, but this system goes down to under -40 °C or -55 °F.

These are the three components of the all-year sleeping bag system from Stealth Products Group (from left to right):

• Patrol Liner
• Cold Weather Mummy Bag
• Bivy Cover / Bivysack

It doesn't look like much, but the magic lies in the materials used. The Patrol Liner and the sleeping bag are filled with a novel hollow fiber that has better insulation properties than any others. Both are also coated with a special layer that reflects your own body heat, similar to a rescue blanket. As soon as you lie down, you can feel the effect immediately.

Patrol Liner

The liner is cut like a classic poncho liner. One side is Multicam.

The other is Coyote Brown. It also has cords for tying into a poncho. Notably, there is a foot compartment at one end.

Here in use. You can also see the shimmering of the special coating on the inside very well.

Just made the burrito and you're already lying in a well-insulating sleeping solution for summer and warmer nights. Of course, you can also lie down in the bivy sack for protection from the elements.

Cold Weather Mummy Bag

This thickly insulated mummy-shaped sleeping bag looks relatively unremarkable.

It has two side zippers that extend almost halfway up the sleeping bag sides. This allows it to be opened up well. Again, you can see the coating very well here.

There are loops at both ends with which the sleeping bag can be secured in the bivy sack.

You can either just lie in it like this, or if you want it particularly warm, then with the Patrol Liner.

We have to admit, we found it a bit awkward and unfamiliar to slip in with the Patrol Liner, but if this system is used more often, you'll surely come up with a good technique. At the head end, the Cold Weather Mummy Bag can naturally be tightened.

Bivy Cover / Bivysack

The bivy sack is made of a breathable laminate and is almost like a small tent.

At the head end, you can insert a Delrin pole, which provides space. This makes the bivy sack look like a small tunnel tent.

The entry into the bivy sack is the same as with the Cold Weather Mummy Bag.

At the head end, you will find a large ventilation opening with mesh. No worries, inside there is a zipped flap made of the same material as the bivy sack to close it.

In the head area, there are many zippers, as the ventilation part can be completely folded down. Then the bivy looks like a CARINTHIA Observer. We find the bivy sack very successful.

As an inconspicuous cocoon, sleeping in the forest is best.

Packsack

The pack sack looks a bit strange at first, but the whole sleeping bag system can be stored in it very quickly.

From getting up to stuffing everything in and closing it takes no more than five minutes.

The pack sack is closed with two small Velcro strips, then rolled up and secured with the straps. As I said, a bit quirky, but it works great.

Conclusion

The All Season Sleep Shelter System from STEALTH PRODUCTS GROUP has greatly impressed us. We slept comfortably warm in the mountains at single-digit outdoor temperatures at the end of March. The system convinced us with its lightweight and relatively small pack size.

The All Season Sleep Shelter System is available from STEALTH PRODUCTS GROUP upon request. Soon it will also be available at S4 SUPPLIES. The price is expected to be around 1350 €. 

S4 SUPPLIES online

STEALTH PRODUCTS GROUP online