Use wool covers over fitted diapers or preflats. These wool covers are made with a double layer of heavy Merino wool interlock in the body. The waist and leg bands use a lighter Merino wool interlock which is stretcher and softer. These are very stretchy and fully lanolized. Hang to dry after use; wash only if soiled or starting to smell.
Hand wash only with wool soap (preferably lanolin enriched), gently squeeze out water, then roll in a towel to remove most of the water and dry flat on a drying rack.
Small - NB size
Medium - up to approx 18 monhts
Large - 1 year and up