Why a leggings waistband rolls down or digs in, how width, stretch, recovery, seam placement and size grading interact, and what to specify and test for a waistband that stays put.
How to write a fabric shrinkage requirement that a lab can test the same way each time: method, wash procedure, drying, cycles, both directions and how to read negative results.
How to specify print colours on knitwear: reference systems, how fabric and ink change colour, approving strike-offs, measuring colour difference and writing a limit.
How to decide whether a zip-up hoodie should be washed zipped or unzipped: what snagging, tape distortion and print damage tests show, and how to word extra advice.
Which colour fastness tests suit knit tees: washing, rubbing, perspiration and light, what each measures, and how to choose the minimum set and grades for your shades and use.
How the US clothing flammability standard, 16 CFR Part 1610, treats plain and raised-surface fabrics, which are exempt from testing, and what that means for fleece hoodies.
How to decide whether to air freight part of a delayed knitwear order: cost per unit against margin, splitting shipments, who pays under the contract, and records.
How to specify and check yarn-dyed stripe jersey for tees: stripe repeat, matching at seams, shade between lots, colour bleeding between stripes, and skew after washing.
How to read an inspection report on knit garments: sample size, defect classes, measurements, photos, carton checks and the result line, and what to ask first.
How private label clothing differs from custom cut-and-sew: patterns, fabric, samples, lead time and minimums, and the labelling duties that stay with the importer in either case.
How to set the size range and negative ease on leggings: fabric stretch and recovery, body measurements per size, grading, size overlap and fit testing.
How nylon-spandex and polyester-spandex knits differ for leggings in feel, moisture handling, durability, colour retention and cost, and which tests to ask for before choosing.
