The prAna Chalk Organic T-Shirt features 60% organic cotton and a new take on the prAna logo in the form of interlocking carabiners over chalk marks. A performance fit and lightweight fabric create a versatile and comfortable tee, well suited to hikes in search of new bouldering spots. Lightweight and sustainable heathered jersey fabrication. Performance Fit. 60% Organic Cotton, 40% Polyester.