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.
What FTC Textile Rules expect on US product pages for tees and hoodies: origin statements, fibre disclosures, fibre trademarks and consistency with labels.
How core-spun and spun polyester sewing threads differ in strength, seam appearance and cost for tees, hoodies and underwear, and how to specify thread and check seams.
How silicone leg grippers keep compression and cycling shorts in place, the comfort and durability trade-offs, alternatives such as wide bands, and what to specify and test.
Why jersey tees often shrink in length and grow in width after washing, how fabric finishing and compaction affect it, and how to set separate length and width tolerances.
How FTC guidance treats Pima, Egyptian and other premium cotton names on tee labels and hang tags, when the percentage must appear, and what hang tags need to disclose.
How the FTC 3% tolerance for fibre content works on US textile labels, why “100%” claims have no tolerance, and what to do when a lab result differs from your label.
