The two main differences are fabric material & number of wings. illum's Organic Cotton Cloth Pads are made of 100% Organic Cotton to minimize exposure to harmful chemical residues and are in basic design with single set of wings. illum's Premium Bamboo Cloth Pads are made with Bamboo & Cotton mix fabric, where it combines the best of both worlds: all natural, super absorbent, and ultra soft. The design itself is unique where it has double set of wings, offering better coverage and protection.