Pink Sponge Hair Rollers for Women, 1.18 x 2.6 in

You are buying 18 pieces here, not one head and hair cover.

Rigid plastic is the cheap part of a thing that also has a spring, a clip or a cord in it. The plastic outlives the moving part.

On the shelf right now: one colour, pink.

The maker names it for travel.

A head cover holds by elastic, and elastic is the part that gives out first. Wash it cool and it keeps its grip for months. Boil it once and it never comes back.