Hunting Layer Size-Set Approval for Canadian Brands

By Sialkot Sample Masters Editorial Team

A hunting layering system only works if its parts fit together. A base layer that is cut generously, a midlayer that is cut tight and an outer shell that ignores both will each look acceptable on a hanger and still bind, bunch or ride up on a hunter in a pack. For Canadian brands sourcing private-label manufacturing, hunting layering size-set approval is where that mismatch gets caught before bulk production. This guide sets out a practical way to run it.

Why Layering Systems Need Their Own Approval

Many brands approve each garment separately: base layer, midlayer, outer, each against its own spec. That catches single-garment errors but misses interaction errors. A midlayer sleeve can be correct on its own and still be too snug over a base layer with a bulkier cuff. An outer armhole can pass its spec and still crush the midlayer beneath it.

Treat the system as the unit of approval. Individual specs still matter, but the layered result decides whether the size set is ready.

The Government of Canada’s extreme cold guidance gives context for layered clothing. The approval checks here address garment fit and documentation.

Separate Body Measurements From Finished Garment Measurements

The most common source of confusion in a tech pack is mixing two different kinds of numbers.

Body measurements

Body measurements describe the person: chest, waist, hip, shoulder width, arm length, inseam. They are the reference your size chart is built on. ISO 8559-1 gives buyers and factories consistent definitions for body dimensions.

Finished garment measurements

Finished garment measurements describe the product after sewing: chest width at a stated point, sleeve length from a stated point, hem sweep, body length. They are what the factory measures on the table and what the sample room checks.

Keep the two in separate columns. Label every finished measurement with its method (point of measure, relaxed or stretched, flat or circumference). Do not infer finished numbers from body numbers without stating the ease you added.

Real Base and Midlayer Bulk

Bulk is how much room a layer occupies once worn, and it depends on fabric thickness, construction and finish, not on the size label.

• Base layer: typically close to the body, with low bulk and stretch doing most of the work.
• Midlayer: adds volume, often with a loft or pile that compresses differently when worn under a shell.

Do not use nominal fabric weight to guess bulk. Measure it on the actual sample. Wear the base and midlayer together on a fit model or dress form and record chest and upper-arm circumference and shoulder breadth over both layers. Those figures, not the flat specs, are the room the outer layer has to accommodate. Record the fabric lot used so the reading can be repeated.

If you are still choosing materials, our technical fabrics guide is a starting point for discussing options with your factory.

Layering Ease

Layering ease is the extra room each outer layer needs over the layer beneath it. It is a design choice, so set it explicitly rather than leaving it to pattern habit.

How to set it

1. Start from the body measurement for each size.
2. Decide the base layer's finished ease over the body.
3. Set the midlayer's finished measurement relative to the base layer.
4. Set the outer layer's finished measurement relative to the midlayer, including any insulation loft.

Write each step as a number in the tech pack, for example "midlayer chest minimum is base layer finished chest plus X cm." The number X is your decision, based on the model fit sessions. Do not copy it from another brand.

Check ease across the size range

Ease that works at the sample size can drift at the ends of the range. A fixed ease on a small size may feel loose, while the same ease on a large size may leave little movement room. Check ease at each graded size, not only at the base size.

Smallest and Largest Grades

Check the smallest, base and largest grades and any grade break where the increments or pattern block change.

• Identify your smallest and largest sold sizes.
• Request samples of both, as well as the base size.
• Confirm that grade rules (the increments between sizes) produce sensible proportions, especially sleeve length, armhole depth and body length.

Linear grading can produce odd results at the ends: sleeves that are too short on the largest size, or armholes that are too deep on the smallest. If the sample shows that, record it as a correction (see below) rather than adjusting the number silently.

Building the Pairing Grid

A pairing grid shows which sizes of each layer are intended to be worn together. It stops the team from approving a medium midlayer without knowing which base and outer sizes it sits between.

A simple grid lists base layer size across, midlayer size down and outer size as a third reference. For each pairing mark one of three statuses:

• Intended pairing: same size across layers.
• Allowed variation: a hunter may reasonably wear a size up or down in one layer.
• Not intended: combinations you do not expect to fit.

Then physically test the intended pairings and the largest variations. You do not have to test every cell, but record which ones you tested and which ones you did not.

Shoulder and Sleeve Nesting

Nesting means the layers sit inside each other without fighting. The key checkpoints are:

• Shoulder point: compare where each seam sits on the body and under pack straps. Set positions for the chosen sleeve construction and minimise stacked bulk.
• Armhole depth and sleeve cap: a shallow outer armhole over a deeper midlayer armhole can pull the whole stack upward when the arm lifts.
• Sleeve length progression: in each size, the outer sleeve should extend far enough to cover the midlayer cuff, and the midlayer should cover the base layer cuff, with the arm both relaxed and raised.
• Cuff finish: check that thumb loops, elastics or adjusters on one layer do not catch on the layer above.

Record these as observations with a measurement or photo, not as a pass or fail alone.

Range of Motion With a Pack and Seated

Flat-table measurements cannot show how a layer system moves. Run a fit session with the full stack on a person, carrying a representative loaded pack.

With pack

• Raise both arms forward and overhead.
• Reach across the body and behind the back.
• Simulate an intended shouldering or draw motion in a controlled fit session.
• Note where pack straps press on shoulder seams, zippers or insulation.

Seated

• Sit on a low stool or in a stand-style position.
• Check that hem length covers the lower back and does not bunch under the seat.
• Note any pull at the shoulders, underarm or chest when leaning forward.

Take photos from the front, side and back. Record what you saw in plain language, such as "midlayer cuff rides up 2 cm on arm raise," not just "fit OK."

How to Document Size-Set Corrections

A correction that lives in a chat message will be lost. Use a correction log that travels with the tech pack.

For every correction, record:

1. Reference: garment, size, sample round and date.
2. Observation: what was seen, with photo or measurement.
3. Cause: pattern, grade rule, fabric behaviour or construction, if known.
4. Requested change: the specific measurement or construction change, in finished garment terms.
5. Status: open, revised sample received, approved or deferred.
6. Approver: the person at your brand who signed off.

When a grade rule changes, update the grade table and re-check the adjacent sizes. A change to one size often moves its neighbours.

Hypothetical Sample Review Example

A brand reviews a size-set of a base layer, midlayer and outer shell. At the base size, the stack fits well. At the largest size, the fit model reports that the outer sleeve ends level with the midlayer cuff when arms are raised.

The team logs the observation with a photo, notes that sleeve length grading appears too small at the top end, and requests a revised sleeve length for the largest outer size. They also flag the adjacent size down for re-checking. When the revised sample arrives, they repeat the same arm-raise test with the same layers and record the outcome beside the original entry.

Frequently Asked Questions

Do we need to approve every size?

You do not need a full sample of every size, but approve the smallest, base and largest sizes at minimum, and document which sizes were not physically reviewed so the decision is traceable.

Should size charts use body or garment measurements?

Both, in separate labelled tables. Body measurements tell the customer which size to choose. Finished garment measurements tell the factory what to produce.

Can we reuse the layering ease from another product?

Only as a starting point. Ease depends on the fabric, construction and intended use of each product, so confirm it with fit sessions on the new styles.

Request a quote for a private-label hunting layering system

If you are planning a layered hunting range and want a factory to work with your size-set approval process, review our manufacturing services and then submit a manufacturing RFQ. Include your tech pack, size range, pairing grid and any correction log from earlier rounds so the discussion can start from your actual requirements. Timelines, pricing and minimums are confirmed project by project.