This Alo Yoga long-sleeve top features a striking open-back design with a keyhole cutout and elegant vertical ruching along the mid-back, creating a flattering silhouette and subtle movement. The sleek black fabric appears to be a high-performance stretch knit—likely a blend of nylon and spandex—offering compression, moisture-wicking, and four-way stretch for optimal comfort during yoga, Pilates, or low-impact workouts. A self-tie drawstring at the waist allows for adjustable fit and adds a refined detail. The crew neckline and full-length sleeves provide coverage without bulk, while the smooth, seamless construction minimizes chafing. Ideal for studio sessions, athleisure wear, or layering under jackets, this top merges functional activewear with elevated design. Its minimalist aesthetic and sophisticated back detail make it versatile for both fitness and casual settings—pair with matching leggings for a cohesive look or over jeans for a modern streetwear vibe. The fabric feels soft against skin yet supportive, and the cut accentuates the torso while allowing full range of motion.