Ava are made from Amni Soul Eco®, the world's first biodegradable polyamide. While other fibres take decades to break down, Amni Soul® takes 3-5 years to decompose in a landfill environment. Read more about Ava here. Here's why you will love Ava as much as we do: 20 denier control top tights Sheer Extra firm control top Flat seams Toe reinforcement Cotton gusset Produced by Calze Ileana S.p.a. Made in Italy 30 days warranty Please note that this style has an extra firm control top, making them a bit hard to put on. Size up if unsure and follow our care guide for instructions on how to put them on.