ITEM NAME:20PCS Universal Disposable Replacement For ResMed 2019NEW AirSense- W6E8 I2 T2F7 Features: Please note that other accessories are not included. 100 % new quality Material: modified polyester fiber Product Process: Five Oneness Enthusiasm Process Product Specifications: 53 MM * 35 MM Product role: 1, air: Take care of bacteria, prevent harmful bacteria from inhaling into the lungs. 2, dust: dust, prevent dust inhalation machine wear motor. And prevent dust from sucking into the lungs, damaging the lungs. Suggestion: Take it out for 3 days or so and bounce the dust off the membrane with your finger. According to the dust situation in the home, one piece is changed from 1 to 3 months. Note: 1. Discontinue use immediately if there is any discomfort. 2. Keep this product out of children's reach. 3. Avoid storing light at room temperature. Note: 1. Manual measurement tolerance is 2-5g. Please don't mind your offer. 2. Because of the difference between different displays, the picture may not reflect the actual color of the item. Thank you very much! The package includes: 20 * Filtered cotton.Because of the difference between different displays, the picture may not reflect the actual color of the item. 1, air: Take care of bacteria, prevent harmful bacteria from inhaling into the lungs. Avoid storing light at room temperature.