[Model Number: HLE616] ● Warm and moist to the touch: This material uses Tencel® brand fiber, regenerated collagen fiber (fiber mainly composed of collagen), and acrylic for warmth and a moist feel against the skin. ● Breathable and reduces sweat odor: The material is breathable due to its moisture absorption and release properties. It also has antibacterial, deodorizing (sweat odor), antibacterial, and antistatic properties. The colors have a heathered look. The waist is finished with a double-folded self-fabric for a comfortable fit down to the details. Wacoal Sugo-i SUGOI Sugo-i Innerwear Underwear Bottoms