Deresina Headwear Unisex Essential Cotton Indoor Caps for Chemo, Hair Loss | Sleep Caps (Sunglow) Cotton & Bamboo Hand Wash Cotton Sleep Caps for Chemo, Hair Loss, Alopecia Light weight, soft, essential cap. Economical and versatile for many uses Can be worn as sleep cap, perfect for indoor use. Single layer cotton & bamboo fiber, breathable, keep snug and comfy This cap is core piece in your elemental indoor hat section. One size- stretches to fit 55cm to 61cm comfortably. Hand wash