Product Manual: 1.Take the clip on the sponge on both sides. 2. Remove the sponge that has cleaned the window. 3.Place the replacement sponge in the brush and press. 4. Peel the rubber strip from one side and then insert it into the new strip that corresponds to the original street. Whats included 30 * triangle sponge 4 * rubber strips 30 * clip 1. Material: triangle sponge and rubber strip, it is durable and can be washed with water. 2. Powerful cleaning sponge: After adding the detergent to the triangular sponge, the window cleaner can clean better. No scratching of the glass. 3. Rubber strip: When cleaning, the sponge in the front of the triangle is cleaned and the underside of the rubber strip scrapes off the water. 4. Simply the replacement: take the clip on the sponge so that it can be separated, clean cleaned and replaced. Effective for single glazed windows with a thickness of 4-30 / 32mm. 5. Suggest It is recommended to replace the rubber strip and scouring pad of the glass wipe regularly, the cleaning effect will be better.