Just remember: some garments don't mind being hot, others do. Air-drying is best for delicate fabrics such as silk, lace and cashmere, as they are more fragile and can be damaged in a tumble dryer. These fabrics benefit from a gentle airflow to maintain their quality. On the other hand, sturdier fabrics such as cotton, linen and denim can handle the tumble dryer just fine. They are more durable and better suited to the higher heat and agitation of tumble drying. If you're unsure about ironing, try Braun's smart iCare and Eco Mode, which protects all kinds of ironable fabrics with the right temperature.