An "absorbent layer" refers to a material or component that can soak up or absorb liquid, moisture, or substances. It is often used in products such as diapers, pads, or bandages to prevent leaking or keep the surface dry. Full definition
Since the shell is separate from the inserts, You can choose what you use for absorbent layers. (clothdiapergeek.com)
The best pants to ensure that leakage does not occur are the two piece toddler training pants and those designed with extra absorbent layers. (natural-parenting-advice.com)
Made with soft, absorbent layers next to baby's body and a waterproof vinyl outer layer to keep car seats and strollers dry and clean. (godiaperfree.com)