Detailed description
Branding pieces are bought on how they survive the wash and the iron, not on how they look in a render. The specification that decides both is the material and the way it is attached.
Where it is used
Common orders are small runs with several designs on one sheet, mixed sizes for a uniform programme, and repeat orders against artwork held on file. Where artwork is held, the repeat run skips the tooling and drops to piece price.
The material question
This is a heat-transfer construction: the design is printed or moulded onto a carrier film and applied with a press. Adhesion depends on pressure, temperature and dwell being right on your press, not only on the film, so the first application is a trial rather than a production step.
How it is quoted
Minimum order is set by the sheet, not by the design: several small designs can share one run, which is how a club with six logos keeps the unit cost close to a single-logo order.
What ships with the goods
Certificates cover the base material rather than the artwork: REACH and RoHS declarations for the film, PVC or silicone, and OEKO-TEX documentation where the item sits against skin.
Checking it on arrival
Measure the size on the finished piece, not on the artwork. Moulded pieces shrink and embroidered pieces pull in, and a five percent difference is visible on a cap front.
Ask for a production sample rather than a hand sample; it is the only way to see what the tooling will actually produce before the run.