What is this type of texture on a fabric called? I've seen knit fabrics with these tiny specks with a contrasting colour.
2 Answers
Nep
Generally, a nep is defined as an entanglement of fibers, that can be caused by environmental factors during growth, processing or are inherent to particular varieties.
Fleck Nep
Flecked Corduroy
You can often see a similar, but unintended effect on knitwear called pilling. This is a defect of the fabric caused by washing and wear. Small, loose fibres on the surface become felted in these small pills.