Helen - Most nappies can be dried on LOW ONLY in the dryer. It is better to put them in the sun as much as possible though to reduce stains. You dont need to put pockets and covers in there because they dry so fast anyway. Prewashing certainly can be done with the dryer. Makes it much sooner that they can be used just watch for shrinkage on the bamboo because some bamboo is not preshrunk enough beforse sewing.