Product Name: Manzoku Bi-onkatsu Rib Abdomen Warm Material Haramaki (Belly Wrap) Size: M-L (29cm length) Material: Ribbed section: 42% Nylon, 25% Cotton, 25% Rayon, 8% Polyurethane / Transition section: 38% Rayon, 22% Nylon, 18% Cotton, 14% Acrylic, 8% Polyurethane Features: Uses material to warm the abdomen and lower back, and is thin and discreet. From the Pokapoka Haramaki Comfort series. The ribbed fabric is used so that it doesn't look like a belly wrap even if it's slightly visible when you move, so you don't have to be embarrassed. The abdominal area has a warm, moisture-absorbing, heat-generating function, stylishly wrapping your abdomen. The absence of side seams makes it less bulky and less noticeable under outerwear. It stretches well and is easy to put on and take off. *We also have other onkatsu (warmth-seeking) series products for sale. You can also buy in bulk, so feel free to comment.