No, there are not different sizes for the Comfo Classic Respirator. It includes a buckle closure which allows for quick and easy adjustments.
We honestly are not sure what other cartridges will work in this mask. We recommend you contact the manufacturer who will have more information available for you. You can reach MSA by calling 800-672-2222.
We do not provide protective eye wear to go with the Comfo Classic Half-Mask Respirator as we do provide safety googles if needed. We do carry the VectorFog M10 and M20 Respirator Masks which cover eyes, nose, and mouth.