Top Description Our bestseller and everyday running essential — lightweight and fast drying short with a moisture-wicking brief liner. Read more Sizing Regular fit, Size Chart Aron is 5'11" and wears size MWilliam is 6'1" and wears size M Cards behind the design Only the essentials: ultralight shell, moisture-wicking brief liner, perforated knit waistband with drawcord, roomy back zip pocket and internal front drop-in. These shorts don't mess around, and the addition of fully bonded hems, reflective detailing and deep side splits ensure you don't either. details detail-card-A Smooth finish Bonded hem seams ensure an anti-chafe fit + clean finish detail-card-B Keep it secure A secure back zip pocket has a nylon pull for easier in-motion access detail-card-C Stay seen Signature reflective logo on front and “watermark” reflectivity on back increases visibility in low light features Weightless feelUltra-light AFO stretch woven fabric for a barely-there-feeling shell Cool and dryFast dry time, high breathability + excellent sweat wicking for a cool, comfortable ride Built-in brief linerIntegrated moisture-wicking performance brief liner Softer, breathable waistbandAn updated knit waistband with external facing drawcord provides a secure, comfortable fit while perforations enhance breathability Smooth finishBonded hem seams ensure an anti-chafe fit + clean finish Keep it secureA secure back zip pocket has a nylon pull for easier in-motion access; can fit most sized phones Keep it separatedInternal drop down brief pocket for key/card includes a key loop bungee* that doubles as hang loop Stay seenSignature reflective logo on front and “watermark” reflectivity on back increases visibility in low light *the s-biner clip, key ring + keys not included with shorts—sorry, we need our keys materials + specs AFO88% recycled polyester, 12% elastane Performance brief liner94% polyester, 6% spandex Weight106g / 3.7oz (M’s Medium)Garment made in Vietnam artist series kits janji-x-mrs-mr-luke fabric AFO care instructions sustainability Our AFO fabric is composed of 88% recycled polyester. We use high-grade recycled polyester made from 100% post-consumer recycled plastic like rPET (commonly found in single-use bottles and containers) to reduce the impact of our apparel without sacrificing on performance, durability or comfort. AFO fabric is also bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard. Learn more about our sustainable initiatives here.