What four way stretch fabric means for activewear, why it needs stretch and recovery numbers in both directions, which ASTM methods apply, and how to test washed fabric.
How to specify a drop shoulder t shirt in a tech pack: where to measure shoulder drop, how sleeve length changes, body width by size, fabric weight and what to check after washing.
How a contoured pouch and a flat front differ in pattern, seams, comfort, fabric use and cost in boxer briefs, and what to check in fit samples and after washing before bulk.
What to specify and test for fleece lined leggings: fabric weight, stretch and recovery, opacity, pilling and shedding, drying behaviour and care label wording for winter styles.
How to decide the drying instruction on tee and hoodie care labels, how shrinkage and print durability tests support it, and how US and ISO symbol labelling fit together.
Why knitwear factories ask for over and under shipment tolerances, how to agree limits by colour and size, how payment works, and what to do about short shipments.
How reflective heat transfers and prints on running tops are made, what affects their brightness, stretch and wash durability, and what you can and cannot claim about visibility.
How to classify oil and dirt spots found in tee and hoodie inspections, where they come from in sewing and handling, the risks of spot cleaning, and how to prevent them.
What mercerising does to cotton yarn or fabric, how it affects lustre, colour, strength and feel in tees and polos, and how to specify and check it when quoting.
How single and double-layer jockstrap pouches differ in support, opacity and comfort, which fabrics suit athletic and fashion styles, and what to specify and check.
Why white undershirts look grey or dull after washing, how fabric finishing and home laundering contribute, and what to specify, test and put on the care label.
Common one-off setup charges in tee and hoodie orders, such as print screens, embroidery files and custom trims, and how to agree ownership, reuse and refunds.
