Compatibility and fit Designed for Vauxhall Astra and Corsa models; the cover is long enough to fully protect the entire windshield and wiper area. Material and durability Constructed from a multi layer composite: PE aluminum foil, needle cotton, silk cotton, and nonwoven fabric with an aluminum coating; thick, tear resistant, heat resistant and durable. Attachment and security Triple fixing system: elastic hooks, strong suction via invisible magnets, and two side wings that clip to the doors; provides a secure hold and helps deter theft so wind cannot blow it away. Visibility and winter safety Fluorescent strips along the rearview mirror housings reflect headlights at night, improving safety when parking; helps keep rearview mirrors clear in winter. Use cases Winter snow and ice: protects the windshield from frost and ice and speeds up morning prep. Overnight frost: convenient protection when parking outdoors in freezing temperatures. Summer heat: reduces interior heat and UV load, helping protect the dashboard and upholstery.