Zyia Royal Blue Vented Open Back Tank 2 When a piece of clothing is so light, breathable, and ready to adapt to your every movement, it earns the title of "better-than-bare." But this reboot of our original vented tank is softer and stretchier than the original because we've added Spandex. The triangular window at the back shows off your favorite sports bra while helping you stay cool and dry. Double top-stitched finishing details. Soft, lightweight fabric feels better-than-bare. Sweat-wicking performance. Four-way stretch for unrestricted movement. Gently swooped hemline falls at mid-hip. Care: Machine wash, cold. Tumble dry, low. Fits true-to-size. Fabric: 92% Polyester, 8% Spandex.