No. The yarn is soft and smooth-faced, made to be worn directly against the skin, including the folded collar.
The rib knit has generous stretch and recovers its shape, so it accommodates a wide range of figures with a close but comfortable fit.
Yes. The knit is fine and lies flat, so it works under blazers, cardigans, and coats without adding bulk.
Machine wash cold on a gentle cycle and lay flat to dry. It doesn't need ironing and holds its rib structure through repeated washes.