6DOTS Black ultra-light Waterproof Tyvek Briefcase Material: Tyvek waterproof material Developed by DuPont, Tyvek is waterproof and breathable and suitable for continuous use. Combined with waterproof lining 20D nylon, it is worthy of attention! ! The ultra-light weight is also amazing; the rope uses a sturdy webbing. Material details Fabric: High strength 1082 D Tyvek (water repellent) Lining: linen Zipper: Metal zipper size 35cm x 26cm x 4cm weight 265g Cleaning method Tyvek is waterproof, and it will dry out quickly. (Do not put in the washing machine.) Shipping instructions: Since the products are shipped from Hong Kong, the shipping method will be chosen according to the destination. Most products are shipped within two business days after payment. Destination: Hong Kong The product is sent by Hong Kong Post, free shipping! If you are worried, you can choose to go to SF Station and fill in SF Station's address directly . Destination: Taiwan The products are sent by Hong Kong Post, which usually takes 5 to 8 days. You can also choose the courier service (NT$100), which takes 2-3 days to arrive. Destination: China Used Zhongtong Express, it usually takes 3 to 5 days. Destination: Overseas Products sent by Hong Kong Post generally take 5 to 12 days.