The SmartAss nappy is a pre-shaped well-absorbent bamboo nappy with elastic bands on the legs. Two inserts can be clicked into the nappy, which are already included for maximum absorption. Over the nappy, you will need another waterproof overpants.
You can choose between a velcro or press-stud fastening. Velcro is just that little bit smoother to use, but snaps get used quickly and are less prone to wear.