These body shaper leggings from John Lewis come in a medium control to smooth over the tummy and waist area. The medium compression and bands on the back will also lift up the bottom for a sculpted and beautifully-curved silhouette. Made from a cotton and 3D lycra construction with a trilobal yarn, the pair also features a cotton gusset for comfortable and hygienic wear. This product also contains Bio Fir which helps to fight against cellulite by increasing cell metabolism and blood flow at skin level. The Trilobal cross section of the fibers creates excellent light reflection, resulting in high sheen. If the desired effect is durability, softness, and brightness. The 3D lycra construction provides a LYCRA® fibre in every knitting row, therefore every thread (both horizontal and vertical) has a LYCRA® fibre core (which can be single or double covered), giving stronger and better stretch and recovery characteristics. Due to all threads being identical in composition the appearance is more even. LYCRA® 3D hosiery products are generally softer to the touch as better quality nylon yarn is used to cover the LYCRA® fibre. The technical fibre is renowned for its outstanding strength, stretch and recovery giving that sought-after second-skin fit.