Ibex's Pulse fabric is used in a comfortable wicking liner for a recycled poly short resulting in the most breathable, functional and comfortable runner they've ever made. With a simple pocket just the right size for a key (or an emergency cash stash if the run goes too long), a reflective logo to highlight you in traffic and an active fit for comfortable movement, the Pulse runner gets it right. Lightweight running short with stretch Merino internal long brief. Inseam: S=5'', M=5 1/2'', L & XL=6''. Front hip mesh envelope pocket. Lightweight recycled poly 4-way stretch outer shell. Mesh panels at back and sides of outer shell for ventilation. Built in supportive wool jersey short. Elastic waistband with embedded draw cord. Machine washable. Our Pulse fabric is designed to lend a bit of stretch to Merino wool. Made for high output activity like trail running and yoga, Pulse is a lightweight blend of Merino fiber and spandex for a softer feeling active garment. Pulse improves the benefits of wool to fit, feel and perform better. 96% Merino Wool, 4% Spandex.