A protective cup comprises: a molded cup-shaped main body having a peripheral edge, upper and lower segments, and an intermediate transition segment interconnecting the upper and lower segments, the peripheral edge having top and bottom sides, the upper segment extending curvedly from the top side of the peripheral edge to the intermediate transition segment, the lower segment extending curvedly from the intermediate transition segment to the bottom side of the peripheral edge, the lower segment having a wall thickness less than that of the upper segment; and an elastic pad body having a loop-shaped lip connected to the peripheral edge of the cup-shaped main body.