Cotton vs. Flannel is largely a matter of personal preference. Some women find they really like just Cotton or just Flannel, while others find they like both equally. Some women find they like Cotton for certain days and prefer Flannel for others.

The Flannel is a little bit cozier than the Cotton, while the Cotton is a little bit smoother and ever-so-slightly thinner than the Flannel. If you live in a warm climate, you might prefer the Cotton since it's less prone to trapping body heat than the Flannel. In terms of absorbency, they're identical. We suggest trying one of each to see which you prefer.