ploypropylene SUITABLE FOR THIGH, HIP TRAINING - Multipurpose exercise equipment targets pelvic, thigh, butt, legs; good choice for those who have just baby /hip flat/postpartum mothers/thigh with fat, are worried about the flatness of the buttocks DETACHABLE DESIGN - you can hold the handles in different position, so that it's convenient in different exercise, use it as you like. The handle is coated with skin-friendly rubber and it won't hurt your skin EFFICIENT EXERCISE - pelvic floor exercises are good for toning and tightening the muscles in the thighs, hips and lower abdomen. this device helps to shape perfect hip curve, and is good for postpartum rehabilitation of women HOME GYM YOGA DEVICE - use this thigh master for 2-3 groups of training every day, shape perfect buttocks, correct your posture. The butt workout equipment for women can activate hip muscle groups in a short time. which is recommendable for people who want to work out in the gym or train at home KEGEL EXERCISE PRODUCTS - doing Kegel exercises (also called pelvic floor exercises) helps to strengthen your pelvic floor muscles, which is good for your urinary system