Therapeutic Weighted Puzzle One side is a plush, mink-like fabric, while the other side is transparent plastic, allowing you to see the steel pellets inside. Search for the purple jewel or the silver â€˜Bâ€™ in the clear side of the puzzle. Find your way up the Blingja mountain using the bead hidden in the plush lining. The mink-like fabric can be stroked, and the beads shifted, for tactile feedback. Place in the freezer for a cool sensation on feet or hands.