Uber: 2 Layers of purple hemp fleece.

Regular: 2 layers of bamboo/hemp fleece.

Hemp is more absorbent than cotton, weight for weight. It is also more sustainable.

Boosters can slip into the open end of Regular pads (regular size) and Uber and Uber Long pads (uber size) to add an extra 50 - 67% more absorbency than they already have.