set 2pcs replacement filter and 4pcs carbon sponge and 3pcs filter: color: blue + white + black + blue white, material: composite material and plastic + sponge Compare with Holmes aer 1 hepa air filter HAPF30AT, helps capture 99.97% of allergens and pollutants from the air. Perfect for reducing odors from pets, tobacco smoke, cooking fumes and other unpleasant household odors. Compatible with aer1 Ready air purifiers. Works for Holmes AER1 series air purification filter, compared to Holmes total air hepa type filter - HAPF30AT. Color: blue + white + black + blue and white Material: composite material and plastic + sponge Filter size: 10 * 4.6 * 1.2 inch Package contents: 2 * replacement filter 4 * carbon sponge 3 * filter Only the above package content, others products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.