Bella Luna Boosters feature a hidden layer of Zorb just under the top layer of bamboo. Zorb is a great addition to the bamboo as it increases the speed of wetness absorption, absorbing 10x it's weight in half a second (that's 20x faster than any other insert material!!!), works to evenly distribute wetness throughout the booster, and dramatically decrease compression wicking.
In total the booster features 2 layers of heavy weight bamboo fleece and 1 layer of zorb.
Bella Luna Inserts arrive to you having been washed once. It is recommend that you wash a few times prior to use, keeping in mind that, as with all natural fiber inserts, they reach max absorption after 8-10 washes.
To keep from added strain on the snaps, please ensure the insert is unsnapped when washing. The weight of waterlogged diapers and inserts can tangle within the insert if left snapped and this can cause the snaps to break.