Special removable design---Compared with the window limiter in the market, the window limiter does not have a key, so there is no risk that the key will not lose and cannot open the window. The special detachable design makes it easy to change the window opening position to fix the window at a small distance. No baby falling --- Help to fix the window and meet the demand ventilation. The maximum opening window distance is 7cm, it is much smaller than the distance babies will fall from the window. The window lock can withstand 27 kg of pushing, and 30 kg of tension, no risk of baby opening the window and falling. And there is no worry about closing the window in the strong wind. the window or scare Babies Aging Resistance: Install window restrictor with 3M VHB adhesive, no drill or tools required. 3M VHB adhesive with strong viscous (the effect will be better after 72 hours). and can be removed easily without any residue, safe for the window. Strong temperature resistance from -30 to 90, no worry about hot summer and cold winter. Waterproof and wide range of applications---The PC material and ABS makes it stronger and brings longer service life. Waterproof material and adhesive tape make you worry free from rainy days. The window limiter can be used on casement window and casement window.