Lululemon Ventilated Hiking Short Sleeve Shirt Carob Brown

No sizing indicated but judging from the measurements its a size medium. Total comfort from start to summit. We moved the seams off the shoulders of this ventilated hiking shirt to keep backpack strap rubbing at bay. four-way stretch fabric Four-way stretch Sweat-wicking Quick-drying features Mesh underarm gussets provide extra mobility and ventilation Flat, strategically placed seams help prevent backpack straps from rubbing Mesh chest pocket