400 micron swimming pool solar cover 7 meters wide, 1 sq m, blue-black

Material High-grade polyethylene, weight 368 g/square meter, color: black.; Attention: the price is for 1 linear meter of 7-meter wide film.; Designed to transfer as much solar energy as possible to the pool water, thus providing excellent heating of the pool water.; Solar blankets are often called bubble films, an effective and cost-effective way to retain heat in the swimming pool water.; The thermal insulation technique used in solar panels is also used here, which is similar to double glazing and helps prevent heat loss due to evaporation, which accounts for 85% of all pool water heat loss.; This new Geo-Bubble technology has been specifically developed to protect against the damaging effects of UV and pool chemicals.; Sharp corners that were subject to high stress have been replaced by a smoother, more uniform shape and thickness of material (50% thicker than standard bubble wrap), which significantly increases the film's resistance.; Improved UV additives, stabilizers and antioxidants on the surface previously gave the film its overall durability, a larger cavity on this film provides more space for air expansion, making it warmer and more durable.