Be bold and confident with Gender X Undergarments Briefs with Silicone Vagina. Made from phthalate & latex free silicone, these briefs are comfortable and easy to put on. The penetrable shaft has a soft, realistic channel and a lifelike entry. Plus, the inside channel also serves as a urination device for convenience. Waterproof and submersible, these briefs have a waist circumference of 22 inches, hip circumference of 32.3 inches, thigh circumference of 16.9 inches, and a length of 7.1 inches.