Gas Mask Double Filter Fan CS Edition Perspiration Dust Face Guard Breathable !! 1.The main part respirater filter:can be washed and long term use.2.The cover:can long term use.3.Filter cotton:about 40 hours/piece.4.Filter carbon box:about 200 hours/piece. Payments 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. Shipping 1.We ship to your eCRATER or Paypal address. Please make sure your eCRATER and Paypal address is correct before you pay. 2.Items will be shipped within 1-3 business day when we received payment. 3.Delivery time depends on destination and other factors; 4.International buyers please note: a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties. b.Please check with your country's customs office to determine what these additional costs will be prior to buying. 100% Satisfaction Guaranteed! Please feel free to contact us at any time, we will get back to you shortly. If there any problem with the product we will do our best to resolve this problem ASAP! your satisfaction is our first priority. THANK YOU !