Mermaid tails are made of satin polyester and poly stuffing.  All ties are from 48" to 54" in length, 1.5" wide.
Measurements are organized: tail thickness @ tie by length from tie to tail including the thickness of the tie.  For 2 - 4year olds.  2T - 3T
Small Petitie:  6.5 x 13"
Variations are due to handmade design.