Condition: 100% new Fits for: AirSense 10 and AirCurve 10 to S9 Series CPAP Features: acid and resistance, good heat resistance, large dust holding capacity, good gas permeability, effective filtration of PM2.5 ultrafine dust, flame retardant, water absorption Work Mode:CPAP Features1:Eco-Friendly Features2:Replacement Filters Features3:CPAP Filter color:White Material:filter cotton size:53 x 35mm Package Contents: 100 x filter cotton Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.