This necklace is hand-crocheted with a waxed nylon cord + small beads that are a mixed variety of colors and bead type. A czech flower button is at the end for a ball-and-joint style closure. There are crimp beads on both ends to ensure durability. There are 5 size options for this necklace that you can choose, the sizing does not increase or decrease the overall price, it will remain the same rate. In the model picture, the size is "XS". The string color used is called "taupe". I do not recommend wearing these necklaces in water, but the waxed cord and crimp beads make it very durable.