These beanies are super easy to use. Just pull them over your head for instant warmth and style. When it comes to maintenance, it's best to hand - wash them in cold water with a mild detergent. Avoid using bleach as it can damage the fabric. After washing, gently squeeze out the excess water and lay them flat to dry. Don't wring them out, as this can distort the shape. As for wearing, they're great for casual outings in cold weather. Just remember about the California Proposition 65 warning. If you have any concerns about the chemicals, check out the website provided for more details.