A broom (10) having a stick (20) insertable on a top side (11′) of a shaped batten (11) from the bottom side (11″) of which there extend bristles (12) adapted for sweeping surfaces. The broom (10) is provided with a casing (30) made in the shape of a shell, shaped so that in a first lowered position, it covers the bristles by at least a portion of the length thereof, and in a second raised position, it allows the use of the broom for sweeping.