Description: ⭐️Fabric: 95% Breathable Bamboo, 5% Spandex ⭐️No seams inside – Gentle on the scalp Covers your entire hairline ⭐️Double layering ⭐️Suitable for all seasons ⭐️Can be worn all day – Doesn’t put pressure on the ears ⭐️One size fits most; 54-57 cm/ 21.25 – 22.5 inches. A hidden elastic strip at the back allows for size flexibility and a secure fit Please let me know if you have any questions.