Bamboo boosters are an excellent addition for enhancing the absorbency of any diaper. Bamboo is highly absorbent and slim, making it ideal for nighttime use or long car rides. The set includes 2 inserts. Note: Our bamboo inserts are crafted from all-natural bamboo fibers, which may repel water due to their natural oils, affecting absorbency during initial use. It may require 10 washes to reach maximum absorbency, but once achieved, their potency will become evident.