Extend Pool Season: Our 18ft/5.49m bubble solar blanket, 12 mil thick, keeps your pool at a comfortable temperature for longer, extending your swimming season. No more cold pool dives! Easy to install and can be trimmed to fit irregular pool shapes for a custom solution Maximize Heat Retention: The pool solar blanket uses thousands of micro air bubbles to create a tightly packed insulation layer, absorbing natural sunlight and locking heat in the water. It warms your pool during the day and retains the heat at night, saving on heating costs and energy use Built for Outdoors: Constructed from durable PE material, our thermal pool cover is stretch-resistant and tear-proof, making it ideal for extended outdoor use. It's designed to handle the sun without cracking