The fully absorbent Boosters & Inserts that we make are made with layers of squishy, locally milled, 100% natural, un-dyed, unbleached cotton fleece
They are very thirsty 
 
Our boosters are made in 2 sizes, small & large
Boosters are used to boost nappies, more commonly your flat nappies.
They are small and layered with cotton to make them easy to place in the common wet zone areas in your child's nappy to help give extra absorbency where the nappy needs it most.
Although flats mostly need boosters, boosters can be used in any of your nappies where they are not absorbent enough ie: leaking.