The headband of these cold weather ear muffs features a slightly stretchable design, allowing for adjustment within a small range to fit various head circumferences. The foldable earmuffs can be compactly folded into a smaller size, easy to carry.Constructed with high-quality windproof polar fleece as the outer layer. Wearing earmuffs does not affect your hairstyle and can be worn with a hat, glasses or scarf. It is suitable for skiing, running, hiking, cycling, commuting or outdoor work. Pricing for quantities of 3000 and above is based on sea freight.