Feature: Made of high quality material, more to use. As part of routine maintenance, the accessories are easy to disassemble and replace. The filter keeps the robot clean and reduces the penetration of dust, pollen and other allergens into the air you breathe. Replenishment HEPA filters for model: i3/i3+/i4/i7/i7+/E5/E6/E7 The replacement iroomba filter can keep your vacuum running at peak performance. Rumba filters should be replaced every 2 to 3 months. color: as shown Material: plastic Package Contents: 18 x Filter Sweeper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.