I wasn't expecting to love it, but I do. It does breathe, it's comfortable, and is roomy enough for my thick waist length hair. It stays on all night and doesn't slip off, but it's not so tight as to cause a headache. To avoid the mark on my forehead where the hat sits, I can slide it back to the beginning of my hair, and it still doesn't fall off! My hair is tangle free in the morning, I've taken to wearing it until I go to work as it just keeps my hair neat until it's tiime to go.