Experience new thrills with the Prince Trainer Kit from Firefly. Includes three sexy and stylish, glow in the dark plugs made of firm, smooth silicone for a rocking good time! Assorted sizes. Suitable with all lubricants. Color Blue. Material Silicone. Product dimensions small butt plug 4.5 inches by 2.0 inches by 0.8 inch. Medium butt plug 5.1 inches by 2.3 inches by 1.0 inch. Large butt plug 6.2 inches by 2.9 inches by 1.2 inches.