1) Customizable fit - General sizes and custom sizes available. Please measure the width and height of the window. - Confirm the direction of the zipper opening. 2) Fine insect protection - The viewing window net uses a very small mesh to block flies, wasps, mosquitoes and other insects. - Helps keep summer spaces more comfortable. - It can also prevent cats from leaking. 3) Durable and washable - Made of high-quality polyester for durability and washability. - Edges are finished with reusable tape that leaves no marks. 4) Easy to install - No drilling required. - To install, apply the tape to the window pane first, then peel off the protective film and stick it to the window frame. Use scenarios - Open living room or bedroom window to enjoy fresh air while keeping insects out. - Attach to balcony doors or patio windows to extend insect protection to outdoor living areas. - Use in kitchens or dining areas during cooking or meals to reduce pest intrusion without sacrificing ventilation.