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Genuine US Military Sleep System

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Original price $170.00 - Original price $170.00
Original price
$170.00 - $170.00
Current price $170.00

US Military Tennier Industries Modular Sleep Systems
The US (Modular Sleep System) made by Tennier Industries was devised by the US army as part of its military equipment systems for ground forces. Developed and made by Tennier Industries Inc. Each sleeping bag can be used separately or in combination, when both sleeping bags are combined there is a claimed temperature rating of -30C. All of the components snap together to prevent sliding around. This is an original piece of US military kit. Used grade 1 condition. Please note that the Medium Weight Intermediate Bag can come in either Black or Grey as part of the modular system

Features Include:

  • Total Weight Approx: 2.8kg
  • Pack size:  30 x 14 in 
  • Made by Tennier Industries Inc. In the US
  • Used grade 1 condition

Patrol Bag (Green Light Weight) Features:

  • Weight Approx: 1.2kg
  • Reversible double-pull (opens end to end) slider allows top or bottom ventilation
  • Non-locking slide fastener self repairs if jammed or snagged.
  • Draft flap prevents heat loss
  • Hood adjusts for heat retention; includes nylon drawcord and barrel lock
  • Temperature rating 0C
  • Measures 92 x 37 in 

Intermediate Cold Weather Bag (Black/Grey Medium Weight) features:

  • Weight Approx: 1.6kg
  • Free from cold spots
  • Insulation does not migrate in the bag
  • Anatomically designed foot box contains twice the insulation as the patrol bag
  • Sewn-in, quilted chest collar prevents air drafts up and down through the hood
  • Hood adjusts for heat retention; includes nylon drawcord and barrel lock
  • Temperature rating -10C
  • Measures 87 x 35 in 

What you get as part of the Modular System:

  • 1 x Patrol Bag (Green Light Weight) = 2/3 season
  • 1 x Patrol Bag (Black/Grey Medium Weight) = 4 season
  • 1 x US Compression Sack

Youtube Review:

United Kingdom 

Under 2kg:
Standard Delivery (2-4 days) - £3.50
Express Delivery (1-2 days) - £4.50
Next Day - £4.99

Over 2kg:
Next Day - £4.99

Saturday Delivery:
Saturday Delivery - £6.99
Saturday Before 1pm - £9.99

Rest of the world
UPS or Fed-Ex - Calculated on checkout 

Next Day Delivery
Orders must be made before 1pm for next day delivery.
Orders made after 1pm on Thursday will arrive on Monday (unless Saturday delivery chosen)
Orders made after 1pm on Friday will be shipped on Monday. 

For more information on shipping please see our shipping policy HERE


To obtain a return label if you live on the UK mainland please CLICK HERE. If you are unable to generate a returns label please email us at Please check your spam folder for replies from us. 

If returning an item for a refund we charge £3 for the return label which is taken from the refund amount. 

If you want to exchange your order please send the item/items back for a refund and make a new order for the items you would like

We accept returns / exchanges from 30 days of the order date. Items must be in original condition to be accepted for returns. A refund is given within 1-2 days of receiving the returned item. 

International order must arrange thier own return postage which is non-refundable. 

Mailing Bags

  • Small items - Paper mailing bags
  • Larger items - Biodegradable sugarcane bags 
  • Very large items - Cardboard boxes

Packing Tape

  • Small items - Gum tape / Kraft Tape (biodegradable)
  • Larger items - Kraft Tape (biodegradable)

If you buy any of our army surplus products then all the packaging will be plastic free. With army surplus you minimise the environmental impact of producing new clothes and reduce plastic waste. 

With our new items there may be plastic packing which comes from the supplier themselves. 

Although we are not totally plastic free (but pretty close) our goal is to reduce our plastic waste as much as possible and will continue to do so going into the future.

Customer Reviews

Based on 3 reviews
Why I chose this bag…

First of all, it's modular, so comes in three pieces: a black compression sack (new), a green summer bag (new), and a thicker grey/light green bag which goes inside the summer bag and is secured with press studs. The last bag wasn't new, but the condition was very good and clean. The size is great, and I enjoyed the room to move about. Weight isn't too bad, and first impressions are it's very warm. It has a good length and the footbox has extra padding. The zips are smooth and top notch. I can see me using a liner and the heavier bag as my go to bag. And I'm sure a liner, even a fleece liner and the thin bag would do as a 2-4 season bag too for most people. I'm typically a side sleeper, so it will be interesting to see if I can actually do this in this bag as it is less of a mummy bag and more of a rectangle, which was my main reason for choosing this bag. It's a lot of bag for the money, and with different liners is even more flexible, and highly recommended. The measurements and weights seem accurate. Faultless service from as usual. I can't wait to test it fully in December and January.

I wish someone that has had the bag for a few years would post their experiences to cover things like breathability, moisture retention, liner movement, stuffing migration, the press studs and zips over time, warmth, weight when wet, drying times, flammability er cetera, because that stuff is the most important, and hardly ever covered. Even the YT link is a new bag using both bags and on a mild day. Hardly appropriate, but at least it's something, My bag, however has different coloured bags, and is much better in my opinion. The pale green/grey bag is a really nice colour in person,. It feels much softer than I anticipated too, Time will tell, but when all is said and done it's an official US army bag, so should last years. I have no regrets whatsoever in purchasing this bag. It's a solid 8/10 from me, and hopefully more, Time will tell. I'll let you know when the bag encounters rain and gets wet :-)

US Military Sleep System - Buy One Before They Run Out!

This is sold as 'used grade 1', but I think that's under-selling it. The one I recieved may have been issued but has definitely never been used. Excellent value for what you get.

Jo Malcolm
Good quality cold weather sleeping bag

Good quality cold weather sleeping bag. Good price.