Outdoor sofas can absolutely be used in a sun lounge, provided they are designed to withstand the elements. High-quality outdoor sofas are crafted from weather-resistant materials like teak, aluminum, or synthetic wicker, ensuring durability against sun exposure, humidity, and occasional rain. For optimal performance, look for UV-resistant fabrics and quick-drying cushions to prevent fading and mold. Styling an outdoor sofa in a sun lounge enhances comfort and creates a seamless indoor-outdoor living experience. Pair with shade solutions like pergolas or umbrellas to protect both furniture and users from excessive heat. With proper care, outdoor sofas can transform a sun lounge into a stylish, functional retreat.