4 pieces of built-in spiral steel bonesfor you 2023 best choice discover your inner beauty Features: 85%Nylon,15%Spandex Pull On closure Tummy control Thong:Mid waist,tighten your lower belly,provide waist support and smooth everything over.Our tummy control panties thong is a soft shaper to smooth your curves.Our tummy tucker shapewear thongs has excellent elasticity of tummy control that enable you flatten the tummy and abdomen, helps with firm tummy and love handles giving you a more charming figure. Steel Bones Design: This compreion thong underwear has 4 pieces of built-in spiral steel bones to provide midsection and back support,help to relief back pain and improve your posture,keep it always stay in right place and prevent rolling down.Mirlay brand best for your chioce. Everyday wear:High quality fabric breathable and comfortable enough to be worn all day long.No panty line. Seamle under clothes. Shapewear for women thongs shape short torso or long torso. High waist shaper thong is tight through the ultra-high elastic material body, to achieve body sculpting effect. Comfortable & Breathable:The function of moisture absorption and sweat removal of fabrics is the most important thing we concerned about ,it's like the thin air, breathability is particularly good, you won't feel hot in summer and it won't give you the feeling of stuffine too. it's the subtle combination of comfort and curves, let us show the sense of confidence and romance easily. Great for All Accasions:You can uses this slimming spandex thong as:under drees shapewear, waist shaper thong,waist trainer thong.Perfect for slimming your tummy under any type of clothes from casual outfits to party/prom/cocktail/wedding drees or gowns.It is perfect if you want to show off your hourgla figure under a revealing dre. Size Chart: please check the size chart choose the suitable size,any problem please contact me