High quality bamboo fiber material: lightweight, breathable, soft, and elastic, providing a comfortable fit for sensitive scalps. This fabric helps reduce irritation and absorbs moisture, keeping the scalp dry and cool during physical activity or daily wear. One size fits most: designed for women with a head circumference of approximately 50 cm (19.7 inches). The elastic fit ensures full coverage without discomfort. Thoughtful gift: a practical and caring choice for friends or family members experiencing hair loss due to alopecia or undergoing chemotherapy. Ample quantity for use and sharing: includes 4 bamboo fiber liner caps in classic beige, offering enough pieces for regular use, rotation, and sharing with others. Functional wear: suitable for women with hair loss conditions. Can be worn alone or under wigs, cancer headwear, or medical hats. Soft and gentle on the skin for all-day comfort.