Tesa® Insect Stop Hook & Loop Comfort For Windows Is A Unique Mosquito Repellent. It Comes As An Easy-On & Easy-Off Mosquito Prevention Solution That Allows Leaving The Window Open While Keeping Mosquitos And Other Insects Out. The Highly Effective Insect Netting Is Available In Two Colors And Several Sizes To Match Most Windows. It Stands Out For Its Fast And Easy Installation: Simply Stick The Included Self-Adhesive Tape With Hook Backing To The Window Frame, Press The Netting Against It Any You Are Done. Removing The Netting Is Just As Easy And Will Not Leave Any Visible Traces.