One Size Fits for Most Head Size The stretchable elastic makes the bath cap fit most head sizes, flexible fit for head circumference of 20-30 inches, ensure the hair caps snug fit. | Top Grade Soft Satin Fabric Soft, skin-friendly, natural, breathable and no noisy plastic sound, retain the moisture in your hair, keep your hair fresh. | Flower Edge Design with Elastic Band The flower edge design makes the satin bonnets more fashionable, and elastic band design makes sure that the night sleep caps not too loose, not too tight. Leave no mark on your forehead. |