Dr. Skin 7 Inches Hollow Strap On from Blush Novelties. Real. Life like look and feel. Explore. Unisex. Can be used by all genders. Accommodating size. Elastic harness fits up to 40 inches waist. Peace of mind. Made of non-porous PVC. Contains no fragrances or latex. Size 7 inches insertion length by 1.75 Inches in width. The Dr. Skin 7 Inches Hollow Strap On is a versatile toy that will keep your playtime going as long as you want! The dildo is hollow to fit a biological penis, but can be worn by any gender. It delivers a soft, life like feel and skin texture for extra stimulation. The harness stretchy waist band will accommodate hips up to 40 inches. Made of lab tested body safe PVC, the dildo in the Dr. Skin 7 Inches Hollow Strap On is non-porous and easy to keep clean. Blush Novelties - Dr. Skin. Categories: Sextoys for Couples, Strap Ons, Harnesses, Penis Extensions, Male Extensions.