cotton mouth masks set come with 6pcs black anti dust face mask, work great to keep dust, air polluted place, vehicles smoke, and sandy air out of your nose and mouth and keep your face warm in cold weather. Anti-dust protection mouth mask is great for outdoor sports such as cycling, camping, hiking, protect your mouth and face from dust, cold, ash, pollen, allergy, fog and haze, vehicle exhaust, passive smoking and so on  製品詳細： - Size: 21 x 14 cm/ 8 1/2 x 5 1/2 inches  - 素材：綿 - 色：黒 パッケージは以下を含みます： - 1個の綿の口のマスク 顧客サービス： If you have any problem of our product, you can click “seller contact” button in your Amazon account to email us. we would be delighted to help you and we will reply as soon as we can. 製品保証： 48 days money-back & 24-month warranty. Any questions you have, please don't hesitate to contact us. If you like our product, click Add to Cart to get it.