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Pre Order Now. SHIPS NOVEMBER 16
British military MTP waterproof bivvy bag laid flat

British MTP Gore-Tex Bivvy Bag

$69.99

Genuine British military MTP Gore-Tex Bivvy Bag in Grade 1 condition. Waterproof, breathable and designed to protect your sleeping bag from rain, wind and wet ground. Ideal for camping, bushcraft, hunting and preparedness.

Pre-order item: Ships November 16, 2026. Orders placed now will be charged at checkout.

Country: United Kingdom

Surplus Grade: Grade 1

Availability: Available for pre-order

Sizing Guide (Upper Body)
Sizing Guide (Trouser)
Surplus Grading

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Top rated for the quality and product materials.

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15 days return on all orders

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The British MTP Gore-Tex Bivvy Bag is a genuine military-issue waterproof sleeping-bag cover from our UK military surplus range designed to provide dependable protection from wet ground, wind and rain.

Its breathable Gore-Tex construction helps prevent external moisture from reaching your sleeping bag while allowing heat and moisture vapour to escape. The British Multi-Terrain Pattern provides effective camouflage across varied outdoor environments.

As a former Royal Marines Commando, I know the value of keeping your sleeping system protected in difficult weather. A dependable bivvy bag is an essential part of any military, camping or preparedness sleep system.

Who’s it for?

• Wild campers and backpackers

• Bushcrafters and survival enthusiasts

• Hunters and anglers

• Preppers building dependable sleeping systems

• Military collectors and British kit enthusiasts

• Anyone needing a compact waterproof cover for outdoor sleeping

Features:

• Genuine British military issue

• Waterproof and breathable Gore-Tex construction

• British MTP camouflage

• Grade 1 condition

• Protects sleeping bags from rain, wind and wet ground

• Suitable for sleeping outdoors with or without a tent

• Packs down for carrying in a bergen or backpack

• Designed for demanding military field use

 

Country

Grade 1
Surplus Grade

Grade 1

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Upper-Body Sizing Guide

Measure around the fullest part of your chest while wearing light clothing. These are wearer body measurements, not the garment’s flat width. Letter sizes are approximate MPO equivalents; use the original military size and product fit notes first. Inch values are converted from centimetres and rounded to one decimal place. If your measurement falls between the listed ranges, check the product’s exact size and fit notes.

Approx. sizeChest (in)Chest (cm)
Small34.6–37.488–95
Medium37.8–40.696–103
Large40.9–43.7104–111
X-Large44.1–46.9112–119
2X-Large47.2–50.0120–127
3X-Large50.4–53.1128–135
4X-Large53.5–56.7136–144

Choose height separately from chest size

Military upper-body size = wearer height / wearer chest, in centimetres. Small, Medium, Large and XL describe approximate chest size only. They do not specify height. Two jackets can both be Medium but have different lengths for different wearer heights.

Height code (cm)Approx. wearer height (ft/in)
1504 ft 11 in
1605 ft 3 in
1705 ft 7 in
1805 ft 11 in
1906 ft 3 in
2006 ft 7 in

Feet/inches are rounded to the nearest inch. These are label height codes, not fixed height ranges. Check both your height and chest against the selected garment, and follow its fit notes.

Example: 160/96 and 170/96 both indicate a 96 cm (37.8 in) wearer chest — approximately Medium in this guide. The 160/96 is for a 160 cm wearer (about 5 ft 3 in); the 170/96 is for a 170 cm wearer (about 5 ft 7 in).

Reading a military size: On an upper-body label such as 190/110, 190 is wearer height in centimetres (about 6 ft 3 in) and 110 is wearer chest circumference (43.3 in; approximately Large in this guide). For garment measurements, pit-to-pit is the flat width across the chest; twice that width gives the garment circumference, not the wearer’s chest size.

View the full UK/US Sizing Guide

Combat Trousers / Pants Sizing Guide

Measure around your natural waist while wearing light clothing. These are wearer body measurements, not the garment’s flat width. Letter sizes are approximate MPO equivalents; use the original military size, leg measurement and product fit notes first. Inch values are converted from centimetres and rounded to one decimal place. If your measurement falls between the listed ranges, check the product’s exact size and fit notes.

Approx. sizeWaist (in)Waist (cm)
Small29.9–32.776–83
Medium33.1–35.884–91
Large36.2–39.092–99
X-Large39.4–42.1100–107
2X-Large42.5–45.3108–115
3X-Large45.7–48.4116–123

Check the leg length as well as the waist. Where a military label has several numbers, follow the measurement order explained on the individual product. A laid-flat waist measurement is garment width; doubling it gives garment circumference, not the wearer’s waist size.

View the full UK/US Sizing Guide

Condition

What to Expect

New

Brand-new commercial outdoor gear, accessories or equipment that has not been previously owned or used. It may arrive in the manufacturer’s original packaging, but packaging is not guaranteed. New products are not military surplus and are therefore not assigned a surplus grade.

Grade 1 - Excellent

Good used service condition. Fully serviceable with light-to-moderate signs of use.

Grade 2 - Good

Serviceable used condition with more obvious wear, fading, markings, repairs or cosmetic imperfections.

Grade 3 - Fair / Serviceable

Heavily used but still serviceable for its stated purpose. Significant wear, repairs, fading or cosmetic defects should be expected and clearly described.

Please note: “New” refers to brand-new commercial products and is separate from our military-surplus grading system. Grades 1–3 apply only to genuine military surplus. Surplus items may vary in appearance due to previous issue, use or storage, and significant condition issues will be disclosed in the product description. For full details, view our Product Condition Guide.