OK to wear while sleeping! Functional innerwear with flexible support. A "waist-shaping" shaper packed with the Kashiki method, famous for curvy dance! The theory is that maintaining good posture leads to a beautiful body line, not just instant support. Therefore, it's not only wire-free, but also uses super-stretch yarn, providing a comfortable fit that can be worn 24 hours a day, even while sleeping. Amazingly flexible and comfortable, this single piece provides beautiful support for the bust, back, abdomen, pelvis, and hips! ＜Product Description＞ 【Composition】 ・1 piece 【Material】 ・Main body: 85% nylon, 15% polyurethane 【Country of Origin】 ・Made in China