What Are They? InvisiKnix are like an invisible cloak for your vajayjay; these invisible, strapless, self-adhesive thongs cover all you need to work your magic all night long. Avoid lines in dresses, tight pants, or booty shorts with these Invisible Naughty Knix. Made with a non-woven fabric, 100% cotton lining, and silicone adhesive, these barely there panties will have people more confused than a Befuddlement Draught, asking themselves, "Blimey, is she wearing any underwear?". Please note: there are a one time use :) SMALL Across Front: 4 inches Top of Front to Top of Heart: 13.25 inches MEDIUM Across Front: 4.5 inches Top of Front to Top of Heart: 13.50 inches LARGE Across Front: 4.75 inches Top of Front to Top of Heart: 14 inches HEART NIPZTIX 3 inches wide 2.5 inches tall