A waist protector having a body shape and high support force and a nail unit thereof, the waist protector comprising a protective garment for wrapping around the waist back of the user, and a nail unit. The tablet unit includes a plurality of nail pieces arranged one above the other, and a joint module that can be joined together by the front and rear swing positions. Each of the pieces includes an upper and lower intermediate portion, and two side portions respectively located at the left and right sides of the intermediate portion, and each of the side portions is convexly disposed on the side opposite to the user. Curved ribs. The ribs are used to increase the supporting force of the slats, and the function of the user's body shape can be appropriately curved, and the protective clothing is manufactured by using a far-infrared anion double-effect yarn to promote the user. Blood circulation and the function of enhancing metabolism.一種兼具身形服貼與高支撐力之護腰背衣及其甲片單元，該護腰背衣包含一用以環繞套束於使用者的腰背部之防護衣，及一甲片單元。該甲片單元包括多個上下排列設置之甲片，及一個將該等甲片可前後擺動限位地接合在一起的連結模組。每一甲片包括一個上下延伸的中間部，及兩個分別位於該中間部左右兩側之側邊部，每一側邊部背向該使用者之側面凸設有多個呈上下延伸且左右弧彎狀之肋條。藉由該等肋條增加該等甲片支撐力，並且仍保有可適度彎曲地貼合使用者身形的功用，且該防護衣採用遠紅外線負離子雙效合一的紗線製造，達到促進使用者血液循環及增強新陳代謝的功用。
