The invention relates to a single-use suit (1) for protection against radioactive particles, comprising a closure (FG1) with a zipper from top to bottom and at the front in the part (3) of the trunk. The invention is characterized in that at least one other closure (FG2) extends from top to bottom in at least one of the legs (31, 32) of the pants part (3) and comprises two bands (BA31, BA32) able to be connected along another prescribed line of engagement (LE3), at least one junction point (S) connecting two of the strips (BA31, BA32) beyond the other line (LE3) being present between the closure (FG1) and the other closure (FG3) in the closed state, a breaking member (CU) being provided on at least one of the closings (FG1, FG3) to allow breaking, by pulling on the member (CU) rupture, the junction point (S). Figure for the abstract: Fig. 1
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