Thank you for viewing! This is a handmade knit hat. It's stretchy, warm, suitable for outdoor activities, and should fit well during sports, so it won't come off easily. The folded-over part can also be adjusted to your liking. It can be used by both women and men. I don't think there are any particular issues. Please refrain from making claims after receiving the product. #KnitHat #Mens #Womens #Outdoor #Jogging #Skiing #Fishing #Active