A light absorbency pad is constructed the same way as a moderate or heavy absorbency pad, except with a bit less absorbency. A light pad has a topper fabric (usually a fun print), a waterproof backer and an absorbent core. It can be used for lighter cycle days, minor bladder leakage or cup backup.A liner is constructed quite differently. Amie reusable liners are made of 3 full layers of flannel, or two layers of flannel and a printed cotton lycra topper. A liner has about the same absorbency as a light pad, but without a waterproof/water-resistant backer. Liners are mainly intended for non-cycle days - for everyday absorbency (for example, to absorb heavier cervical fluid). They can also serve as protection for the very end of your cycle, when flow is simply a small amount of thicker, brownish discharge. Some people use them as cup backup and this may work for you, depending on the level of cup leakage you experience.