This Imse Vimse contour diaper features elastic in the legs for added protection against leaks and is made from 100% organic terry cotton for maximum absorbency. Another benefit is its quick drying time. It is also less bulky than other terry cloth diapers on the market. It is also a one-size diaper; so it will last from birth to potty. This diaper is ideal for daytime, nighttime and heavy wetters. It works great with any of the Imse Vimse diaper covers, and because of the generous wings, there is no need for pins.