I exercise in this top and I'm enjoying it. It's long, so it covers my bum during forward-bends and doesn't slip down too much during back-bends. Do you expect anything more from a yoga top? I don't.
About the product: 155 g/m2, 100% cotton, organic, combed and ring-spun (single jersey). Deep neckline and armholes with fine rib knit binding. Side seams, double seams on bottom hem.