Details, Size & Fit. Recommended for training. Made from a four-way stretch fabric,The Stretch Back Shorts from The Upside will fast become your ideal training partner. Ourmodel. iswearing size mediumshorts,andusually takes a size medium/32pants. Heis 6’0” (183cm) tall with a 42”(107 cm)chest and a 32”(81 cm)waist. ?-Length: 42cm Regular fit Four-way stretch fabric Navy hue Elasticised waistband; internal drawstring Zipped back pocket Logo print near Thehemline Lining with quick-drying properties.Cold wash. fabric / material: NA.Materials: 100% Polyester.SKU: TH135SA04PKX.