Every Primal Play garment is cut from modal, a cellulose fiber spun from beech pulp. We tested a lot of alternatives before settling on it, and the decision came down to two things.
It is a smooth-surfaced fibre
Cotton is a shorter staple fiber with a rougher surface. Modal has a longer staple and a smoother surface. For a child who notices texture, that difference matters more than how soft something feels on day one.
It has no surface for a fingertip to find
The knit face is smooth and even. No slub, no nap, nothing raised.
What we do with it
The fabric is only half of it. On the boxer briefs the leg hem is a turnback finished with a two-needle coverstitch, so no ridge sits against the skin. How the waistband is built is covered on the waistband page. No woven size or care label against the skin. Size and care are printed on the inside back panel in a soft ink that will not crack, and our small logo tab sits on the outside.
Care
Machine wash cold, tumble dry low. Skip the fabric softener, which coats the fiber and dulls the surface over time. No bleach.