Selection guides

How to specify a military backpack for a procurement program

ODM Backpack technical deskPublished 28 Oct 2026Updated 04 Nov 20269 min read

A procurement-ready way to write a backpack spec: volume, structure, carry system, attachment, materials and the evidence you should ask a supplier to provide.

Start from the load, not the litre rating

A litre rating describes internal volume, not whether a pack can carry your equipment list comfortably. Write the load first: total weight, the largest single item, and the items that must be reachable without opening the main body. The pack structure follows from those three facts.

For a patrol or field program, a 45 L body with a stabilised harness often carries more usefully than a larger body with a soft back panel, because the load sits closer to the spine and does not shift during movement.

List total carried weight and the weight range between the lightest and heaviest configuration.
Identify items that need external attachment and their mounting standard.
State whether the pack is worn with a belt kit, body armour or a plate carrier.

Write the structure as requirements, not adjectives

Terms such as heavy duty or rugged are not inspectable. Replace them with measurable requirements: shell fabric weight, reinforcement at named stress points, stitch type and density, and hardware grade. This makes the sample review objective and gives the factory a checklist that can be verified line by line.

Requirement area	What to specify	How to verify
Shell	Fabric weight, weave, coating	Material record and incoming inspection
Stress points	Bar-tack count and location	In-process inspection record
Attachment	Webbing row count and spacing	Approved sample measurement
Hardware	Zipper type, buckle grade	Component specification sheet
Base	Reinforcement layer and stitch	Approved sample review

Define the carry system before sampling

Harness geometry is the most common source of rework. Torso length range, shoulder strap curve, sternum position and belt interface should be agreed before the first sample, not adjusted after it. If the pack will be worn over body armour, say so explicitly and supply the armour thickness.

Where a program covers multiple body sizes, specify the adjustment range rather than a single size. A harness that covers your population with one approved geometry is easier to keep consistent across re-orders than several fixed sizes.

Ask for evidence that matches the claim

Certificates and test reports are only useful if their scope matches what you are buying. Ask which party issued the document, which site it covers, and which material or component it refers to. A system certificate for the factory does not certify a specific fabric, and a fabric test report does not certify the finished pack.

Request the current copy of each document and check the validity date.
Confirm whether reports cover the fabric, the hardware or the finished item.
Agree how batch records will be retained and referenced on cartons.

What to put in the request for quotation

A usable RFQ contains the drawing or reference, the equipment list, the quantity range by style and colour, the marking requirement, the packaging and labelling requirement, and the destination. It also states what must be quoted separately, such as tooling, sampling, test pieces and third-party inspection.

If the drawing is incomplete, say so. A written feasibility note listing the missing decisions is faster than a sample built on assumptions that have to be rebuilt.

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