A neckline looks like one decision, but a factory needs several numbers to cut it. Crew, V-neck and scoop styles differ in shape, depth and where the rib sits, and a small change in any of them changes how the tee looks on the body. Write the measurements down for every size instead of sending a photo.

The points to measure

For each style, give neck width seam to seam, front drop from the neck-shoulder point to the base of the neck seam, back drop, and finished rib height. For a V-neck, add the depth of the V and the position of the point. For a scoop, describe the curve with a sketch or a template shape, because the same width and drop can produce different curves. State where each measurement starts and ends.

What is different between the three

A crew neck sits high and round, and its main risk is a neck opening that grows or flares. A V-neck needs a clean point and a neckband that lies flat at the join. A scoop is wider and lower, so it exposes more of the shoulder line and needs the shoulder seam to stay in place. Check how each style looks on a body, with and without an undershirt.

Grade by size

Neck width and drop usually change by a step between sizes, but not always in proportion to the chest. Ask the factory for the grade rules and compare the smallest, middle and largest size. A neckline that is right on a medium can look tight or too open on a small or extra large.

After washing

Wash finished samples with a named procedure such as ISO 6330, then re-measure neck width, drop and rib height. Compare with the approved sample. Check dimensional change with ISO 5077 where useful, and look for neck rib that grows, ripples or flares. Heavier fabric tends to hold a neckline better, so check weight with ASTM D3776 for each lot.

What to approve

Approve a measured, washed sample for each neckline, keep the sketch with the tech pack, and record the tolerance you will accept at inspection.