Product description : This product is a pack; When used in side windows, use one Suitable for each window. Each is equipped with 3 suction cups. When used in the rear window, you can use both at the rear window at the same time. Simple to use, beautiful and generous. The suction cup quality is made of brand new materials, and the suction power is relatively good! You can suck horizontally or vertically! It's all okay! (However, friends should first confirm the size of their car beSuitable fore buying it!) product size :68*125cm/58*125cm/50*125cm/45*125cm/40*125cm/40*60cm Usage method : 1. Press the suction cup with the alloy rod on one end of the windshield so that the heat insulation curtain is fixed to the side of the windshield. 2, another suction cup adsorbed at one end of the windshield, as long as the plastic ring is pulled out of the buckle on one end of the suction cup to complete. 3. When you don't want to use the heat insulation curtain, just gently pull the small round particles on the upper side of the suction cup to make the suction cup detach from the glass, and the heat insulation curtain will automatically wind up.