Abstract: A hair curling device has a flexible flat base portion, a stem having a bottom end secured to the base portion, and a bowl portion having a frusto-conical wall extending upwardly from a top end of the stem in an open position. The frusto-conical wall has a top edge and a flange extending from the top edge, the frusto-conical wall adapted to be folded over in position around the stem so as to enclose the stem and the base portion in a folded position where the flange of the frusto-conical wall extends around the outer edge of the base portion and is aligned with the bottom of the base portion. The base portion, the stem and the bowl portion are made in one piece from a silicone material. The frusto-conical wall has a greater thickness in a region adjacent the stem than the thickness along the rest of the frusto-conical wall.