The Gypsy Quilter's Heat Resistant Thimbles are thermal finger protectors intended for use while ironing. Slip thermal thimbles onto your fingertips to fearlessly adjust fabric as you iron, without getting burnt. Heat-Resistant Thimbles are not intended for use with needles. There are 16 sets of 3, for a total of 48. Each set of three has various sizes and is meant to be worn on your pointer, middle, and ring finger.