This is the Midori Anzen work lumbar support belt "koshiina STANDARD." It's an inner type worn inside work pants and reduces stress on the lower back through its excellent abdominal pressure effect. Product Overview Product Name: Work Lumbar Support Belt koshiina STANDARD with Loops Manufacturer: Midori Anzen Co., Ltd. Type: Inner type (worn inside work pants) Features: Based on the "abdominal pressure theory (rugby ball theory)" devised by a Doctor of Medicine, it supports the lumbar spine from the inside by tightening the lower abdomen and increasing intra-abdominal pressure. Reduces stress on the lower back through its excellent abdominal pressure effect. Includes belt loops to prevent riding up. Size L: Pelvic circumference 85-100 cm Stock: 1