Benefits Reduces heat transfer from the portable air conditioner exhaust hose so cooled air stays in the room and outdoor heat is blocked. Improves AC efficiency and can help lower energy costs by preventing warm air from reentering through the hose. Soft, flexible construction installs cleanly without unsightly creases or kinks. Key features Triplelayer insulation: acrylic fabric outer layer, cotton cloth middle layer, and EVA foam inner layer for effective thermal protection and pliability. Size and compatibility: 60 inches long by 20 inches wide; designed to fit exhaust hoses with diameters from 5 inches to 9 inches, compatible with a wide range of portable AC brands. Adjustable and simple to install: tool attachment with an included adjustable strap. Excess length can be folded back and secured with the strap for a neat fit. How it solves common problems Stops warm outdoor air leaking back into cooled spaces through the exhaust hose, reducing hot spots and overworking the AC. Eliminates the need for ad hoc insulating solutions that crease, tear, or look unprofessional. Quick, notool installation makes it easy to add insulation when moving units between rooms or storing the unit seasonally. Practical use scenarios Apartment or condo: Fit over the portable AC exhaust hose running through a window or sliding door to keep the living room cooler and reduce thermostat cycling. Home office or workspace: Prevents heat from the exhaust hose from warming the workspace, helping maintain steady indoor temperatures for comfort and productivity. Temporary setups (garage, workshop, RV): Slip the sleeve over the hose to improve cooling performance where insulation is often compromised. What to expect A readytouse insulating sleeve made of acrylic fabric, cotton cloth, and EVA foam that measures 60' x 20' and fits 5'–9' hose diameters. Easy, repeatable installation using the included adjustable strap; extra length can be folded and secured for a tailored fit. No tools required. Compatible with many portable air conditioner models. Provides cleaner appearance and better insulation than bare exhaust hoses.