It doesn´t get much more comfortable than this.Its extra-stretchy fabric moves with you, not against you, so you never feel held back.FEATURES:-Super-soft & stretchy performance knit fabric holds you in & stays up while on the run.-Material wicks sweat & dries really fast.-4-way stretch material moves better in every direction.-Envelope pocket on wearer´s back right for energy gels or small essentials.-Generous ½ zip makes for easy layering.-Built-in thumbholes help keep sleeves in place.-Cropped body length.Fabric:- Knit.