Boneyard The Mansizer 3X Stretch Silicone Extender Clear. 100% silicone, 3X stretch fits most, realistic design. Features a thinner bottom layer for increases sensation and a stretch ball strap for no slip secure fit. Giving you the size and confidence for complete sexual satisfaction. Size unstretched length: 6.5 inches, unstretches girth 5.5 inches. Color Clear.