A while ago I covered an Australian issue butt-pack, that I had picked up a number of years ago, and this is along those lines. I managed to score a bulk load of retired stock in the way of pouches and bags, and these respirator haversacks were one of these.
These are British Respirator Haversacks which is NSN listed as 4240 99 800 9601. They are designed to carry the S10 respirator. I don't have a S10, but do have a full-face 3M 6000 series mask that fits nicely. Whilst I say canvas-era, these are actually a Codrura type nylon, for all the hard-wearing, non mildew and water-shedding goodness modern materials offer.
The bag measures 29 x 26 x11 cms (11" x 10" x 4.5" ) and weighs 475grams. Lacking more modern PALS/MOLLE fittings, the haversack has a couple of different attachment and carry options. A twin-stud openable belt-loop, which also features a wire hanger, from the old ALICE style fittings.
A long nylon strap with a Fastex style buckle allows for a quick waist or shoulder slung carry as well, and there is even a secondary shoestring type cold to further secure the pouch around the waist if shoulder-carried, or around the thigh id hip-carried. The cold can be secured out of the way if not in use, or removed entirely.
One side of the pouch features a hook-and-look pocket, a good size for a survival tin, a GPS unit or other small items you might need in a hurry.
The inside of the haversack is quite spacious, fitting one each of the 1L and 2L Pathopak containers with plenty of room to move. The internal dimension really give you a lot of carry capacity, and the haversack itself it very sturdily put together.
Inside the haversack, as well as the main spacious compartment are several other interesting features.
One hook-and-loop closing front pocket, and two webbing and hook-and-loop holders. These just took the 1L Pathopak's and I expect they are designed to fit additional filter canisters for the S10 respirator.
They would certainly work to fasten and store a number of smallish items, and when not in use, being made up a webbing, will simple squash out 0f the way.
The front pocket has a small hook-and-loop fixture, and features broad pockets sewn in, to fit NBC combo-pens, morphine syrettes, first aid kit, gloves and the like. They are made of the same material as the rest of the haversack, and whilst if they had been elasticized it would have been good, they probably work just fine in conjunction with the flap.
Even the top of the haversack's lid has some features, as well as the press-stud and hook-and-loop lined lip, there are twin bands of elasticized webbing, to allow you to affix a number of small items like more gloves, a first aid kit or the like.
These may not be flashy and new like a lot of other high-speed gear thats coming put, but they are rough, rugged, dependable and spacious.
I've got quite a few of them, and will be listing them on www.tacticalcoyote.com soon.