ACT BioPerf Long Sleeve T-Shirt Size:L We recommend selecting your standard

We recommend selecting your standard waist size for the intended relaxed look

Can I layer a jacket over it

Fabric - Body: 100% Recycled Nylon Ripstop With Non-PFC Durable Water-Repellent (Non-PFC DWR) Finish

How do they feel in use

the Cloudmonster Void keeps you comfortable from first step to finish

ACT BioPerf Long Sleeve T-Shirt Size:L We recommend selecting your standardThe ACT BioPerf Long Sleeve T Shirt in Black is a sustainable choice for runners requiring extra coverage without the weight of traditional synthetics. Made from 100% plant based nylon derived from castor beans, this top weighs only 142 grams while managing moisture effectively. Its silk like texture feels natural against the skin, making it a technical essential for cool morning sessions or sun protection that remains incredibly breathable and eco