Unlike everyone else, the British army just could not make a sleeping bag deal with the Teutonic devil, which is Carinthia. So they did the next best thing and copied the Tropical bag and Defence 4 bag, which is this one, and called it the Modular Sleeping Bag System. So here's some proud English vision for sale!

• A three-season bag
• Durable and dependable
• Part of a modular system
• Compression bag NOT included

The most useful part of the British modular sleeping bag system is this three-season bag. What separates this military bag from many civilian ones is more bulk, stronger materials and a way cheaper price, being army surplus.

The bag is almost a direct copy of the Carinthia Defence 4 sleeping bag. There are not many British specialities in this one, except the tried and true mesh pockets for valuables and such. The colour is green, and every component is high-quality stuff. The opening can be adjusted and the bag has hook-n-loop tabs along the main zipper. On the inside there are attachment points for a liner bag, Carinthia's model will fit.

Materials and temperature rating

Made of strong nylon material, with hollow-fibre padding sandwiched on the inside. The comfort rating of this bag when new would be about -10° C / 14° F. No accurate info, though.

This bag is a part of a modular system: if one were to put the light summer bag inside this, the result would be a four-season bag.

Condition

Used, sometimes a bit seedy around the head but intact. We recommend washing the bag before use if you feel like it. Apparently, these are made by FECSA, a Spanish company that also made sleeping bags for the Dutch army at least.