The Contrast Crops are 87% Nylon and 13% Spandex.
Model - Courtney (164cm tall / 5"4) wears a XS in this style.
Machine wash inside-out in cold water with like colours - use powdered detergent - don't wring excess water - air dry in a shaded area (do not tumble dry) - do not iron - do not soak for long periods in water.