The main difference when transitioning through sizes are the fits amongst the rise and the waist. The rise of a diaper is the measurement right below the belly button through the legs to the top of the bottom. This measurement naturally effects the elastic fit for the thigh.
Most one size diapers have multi snap settings or touch tape fasteners to adjust tightness through the waist and more often than not, snap settings are seen within the rise.
Inserts range from microfiber to terry cloth, bamboo, flannel and other absorbent materials.
The beauty of a one size diaper is that it is a constant, typically fitting from birth to potty training or about 8-35lbs.
Through personal experience one size diapers are a great crutch to have when trying to keep up with a growing baby. Not to mention you get more bang from your buck! So shop around and see what works best for you.
Not sure where to purchase cloth diapers? Visit my etsy shop!