Why are Wonderland’s textiles washable at 60°C? A healthy sleep environment is a top priority for us. You will therefore find that all textiles on a Wonderland bed are washable. Dust mites can be found in all homes, and thrive in beds in particular. To remove dust mites, it is important that the textiles are washed at a minimum of 60°C. With washable textiles on the entire bed, you will get a clean, healthy sleeping environment for years to come, and you will get a bed with a longer lifespan.