Choice of bamboo/microfibre or organic cotton. Slightly smaller and softer, the bamboo/microfibre insert is ideal for smaller babies, but may need additional boosting as the baby grows. If additional boosting is required simply add another insert into the nappy.
The larger cotton insert, is very absorbent, and great for older babies or heavy wetters. Can get a little stiffer with washing.
The Blumchen shell can be reused multiple times, allowing only the insert to be changed, making it a very economical system. For a full day of use, 2 covers and 6 inserts are recommended (more inserts for newborn babies who need to be changed often).