Wacoal Maternity Innerwear - Pelvic Research Institute Size L I used this when I was in my final month of pregnancy because my lower back pain was severe. I used it for about a month. I was able to walk with this on! There is a slight pilling, but there are no problems with use. The following is transcribed below: A perfect fit, only possible because it's from 【Wacoal】, a brand that understands the changes in body shape before and after childbirth! Many users have given it rave reviews. ＜Pelvic Research Institute® [Functional Belt for Before and After Childbirth]＞ Co-developed with the Japanese Midwives Association Supports the three points around the pelvis (sacroiliac joint ~ greater trochanter ~ pubic symphysis) in a ring shape, providing gentle support for the lower back and comfortable wear. ・Y-shaped structure to hold the hips and prevent slippage. ・Uses breathable urethane, making it comfortable and less stuffy when worn. ・Easy to tell the front and back, and easy to wrap with a belt-through style. ・Soft against the skin with a sewing specification with few irregularities. ・Both the bones and buckles are made of resin for a soft feel. ◆When wearing before childbirth, avoid the bulging part of the abdomen and tighten the belt. ◆Handling instructions: Hand wash only ◆Quality: Main body: 100% nylon, Mesh part: 85% nylon, 15% polyurethane, Piping part: 85% nylon, 15% polyurethane ◆Production: Made in Japan ◆Manufacturer: Wacoal ★Role of the Pelvic Belt★ During pregnancy, posture changes, which increases the burden on the lower back of pregnant women. This is thought to be caused by the fact that as childbirth approaches, the weight gain associated with pregnancy and the action of hormones from the placenta gradually loosen the human body and muscles around the spine and pelvis. In addition, after the middle of pregnancy, the upper body is tilted backward to balance the body to support the abdomen, which is getting bigger. Also, after childbirth, the human body and muscles around the pelvis begin to return to their original state naturally, but they do not return immediately. By firmly supporting and tightening the pelvis in a ring shape, it supports the loosening of the pelvis before and after childbirth and reduces the burden on the lower back, making it more comfortable to spend time from pregnancy to postpartum. By firmly supporting and tightening the pelvis in a ring shape, it supports the loosening of the pelvis before and after childbirth and reduces the burden on the lower back, making it more comfortable to spend time from pregnancy to postpartum. Shipping may be done using recycled materials and simple packaging. Please understand this beforehand.