Fit, fabric and functionality. This tank top checks all the boxes.The Heart & Hips Sienna Mock Neck Tank Top in black is a sleek and essential piece for any wardrobe. This sleeveless, double-layered top features a chic mock neck, making it ideal for both layering or wearing solo for a polished look. Crafted from 94% Polyester and 6% Spandex, it offers comfort and flexibility. Closure - Pull on. Model is 5'4" and wears a size Medium.