Although the comfort granted to the onesie-wearer can make it hard to change into normal clothes, onesie hygiene is certainly to be recommended. It is true that toddlers get a bit smelly if they don’t change clothes, and in the comfy warmth of a onesie things are no different. As onesies are made from a variety of fabrics, the exact washing instructions will depend on the onesie you buy. Typically they are all machine washable, so it shouldn’t cause you any undue stress. What material should I get a onesie made from? When it comes to onesies, it’s generally better to look for one with a bit of room to spread out in: they’re designed for comfort after all. Usually onesie manufacturers are aware of this, so whatever sized clothes your toddler usually wears should be the size of onesie that fits them best. The dimensions of each onesie are included in our product descriptions to help you find a fit that’s just right. How do I wash a onesie?