XR Brands Trinity Men line Inflatable Suction Cup Realistic Dildo Black. From Oh to WHOA! The Inflatable Suction Cup Dildo gains girth and length as you pump! The suction cup end makes it easy to place on any smooth surface so you can have fun in a variety of ways. Measurements: deflated dildo approximately 6.75 inches in total length, 6 inches are insertable, and 5.25 inches in circumference at widest point. Inflated dildo approximately 9 inches in total length, 8 inches are insertable, and 9.5 inches in circumference at widest point.