New Balance WS21182 Relentless Fitted Bike Short Black M Performance shorts with a fully engaged fit with reactive stretch so that you can relentlessly attack your workout. Made of recycled polyester, polyester, and spandex. Wide, soft Relentless collection waistband is sewn-on elastic with an overlapping V-shaped front. Overlapped end is fully sewn down, and wraps from left to right. Sturdy performance knit fabric feels light. Four-way stretch ensures fabric can mold to your body and follow your movements. Center back seam keeps shorts contoured for a body-embracing fit. Hems have 2-ply edges for additional hold that doesn't pinch. NB Dryx offers premium performance with fast-drying wicking results. Tags with fabric info are sewn onto inner rear. Triangle inset at crotch is lined with athletic mesh for breathable contact.