True Fit Protective Hygienic Clear Liners Strips Thong Style Swimwear Bikini Lingerie Clear 2 mil polypropylene face sheet design for softness and excellent conformability. Liner Measurements: 1 5/8" x 6 1/8" Clear, acrylic adhesive with high cohesive strength to provide a secure bond to fabric and long term clean removability This material has been tested in an independent laboratory and found to be hypoallergenic and to have zero dermal irritation to the skin. Hypoallergenic medical grade adhesive.