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British Army Military Modular Sleep System


Only 4 in stock.

British Army Modular Sleep System 

Looking for a versatile sleep system that can handle just about any condition? Look no further than the British Army Military Modular Sleep System. This ingenious design features three bags in one – a Medium weight bag, a lightweight bag, and an inner liner – giving you a temperature rating of around -20 degrees when all combined together. The Medium weight bag on its own is perfect for colder temperatures, while the Light bag can be used in warmer climates. Plus, the outer shell is made from ripstop nylon for extra durability, and the insulation is made from Hi-Tec to retain body warmth. So whether you're camping in the summer or braving the cold winter months, this sleep system has you covered.

The Medium weight  and lightweight compression sacks are sold separately due to the limited availability of the compression sacks. You can buy these from our website when they are available. 

Features Include:

  • British Army Issue military modular sleeping system
  • On its own the Medium weight bag is a great 3 season bag
  • large hood section with an insect net
  • Inner mesh pockets for valuables 
  • Grade 1 used condition
  • Outer shell is ripstop nylon
  • Insulation: Hi-Tec  to retain body warmth
  • Comfort rating of around -20C
  • Extreme rating -32C
  • Size Large: 212 x 81cm 
  • Size Medium: 205 x 76cm
  • Weight Medium: Approx. 4kg
  • Weight Large: Approx. 4.5kg
  • Compression sacks sold separately ( Can be purchased from the website when available)

Youtube Review:

United Kingdom 

Under 1kg:
Standard Delivery (2-4 days) - £2.99
Express Delivery (1-2 days) - £3.99
Next Day - £4.99

1kg - 2kg:
Standard Delivery (2-4 days) - £3.99
Next Day - £4.99

Over 2kg:
Next Day - £4.99

Over 2kg (NI & remote postcodes):
Standard Delivery (2-4 days) - £4.99

Saturday Delivery:
Anytime on Saturday - £6.99
Before 12pm - £8.99

DPD - £23

Rest of the world
DHL Express - 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. 

Items on pre-order display a delivery time under add to cart button and in your cart. 

If you are having trouble getting shipping rates please contact us 
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 the link and follow the instructions (CLICK ME)
If you are unable to generate a returns label please contact us via email ( Please check your spam folder for replies from us. 

We charge £2 for returns which is taken from the refund amount. 

We accept returns 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. 

For more information please refer to our returns policy Here 

Garment Bags

We are using a new technology called Hydropol to store our clothes whilst in the warehouse. We are really excited about these bags. They are a very similar material to plastic, but without all the negatives. They are 100% biodegradable, compostable and breakdown to non-toxic materials. They will degrade when in water over 70C, so we suggest you give this a try when you receive one of our bags. 

Mailing Bags

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

Packing Tape

  • Small items - gum tape (biodegradable)
  • Larger items - reinforced gum tape or brown tape (non-biodegradable)

If you buy any of our army surplus products then all the packaging will be plastic free (except the tape for large items). 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.