This adjustable plastic thimble is made my Prym and a clever way to get a comfortable to use, custom fitted thimble. Simply place it briefly in boiling water until it become soft and pliable and then it can be placed on the finger and shaped to suit. Ideal for people with longer nails. The perfect addition to any sewing kit. Ideal for dressmakers, tailors, students, garment manufactures or anyone working with fabrics at home or in a working environment.