Microterry is very absorbent and so makes for a slim insert, though is not quite as slim as hemp. It is a synthetic material, meaning that it stays very soft, even in hard water areas. These inserts are made from very high quality fluffy microterry and are approximately 1.5cm thick when both inserts are used together. They absorb liquid extremely quickly which reduces the chances of leaks. 1 Popper in top center to affix.
Small 30 x 14cm (center)
Large39 x 14cm (center)