Solid-color short sleeve T-shirt, with exclusive Body fabric (biodegradable). Ref #: Fabric: Bio Body. Bio Body: 100% Polyamide. Light, breathable and with a great fit, it's comfortable and has a soft texture. Approved with the Amni Soul Eco sustainable thread technology, which is developed in biodegradable polyamide. It's improved formula allows the clothing to decompose quickly after being correctly discarded in landfills.