Compatible With: for Shark RV2310 Matrix sweeping robot（Please confirm your machine model before placing an order） Made of high-strength and environmental friendly materials, soft and durable to use. Replace the old, broken or dirty parts, and improve the cleaning ability and effect of the cleaning robot. As part of routine maintenance. For best results, filters should be replaced every 2 - 3 months. As part of normal maintenance, it can be easily disassembled and replaced Package Contents: 4 * filter 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 +/- 1-3 cm.