Superior Protection for Fragile Items. Thermacol boxes. Known for their excellent insulating and cushioning properties, Thermacol (also known as expanded polystyrene or EPS) boxes are the perfect solution for packing and shipping delicate products like electronics, glassware, and temperature-sensitive goods. With their lightweight yet highly durable structure, Thermacol boxes prevent damage from impacts, vibrations, and temperature fluctuations, ensuring your items arrive in perfect condition.