Set includes 40 pieces Easy application and no residue: the diameter of this CGM patch is 7 cm, which ensures perfect sensor attachment. Less irritation and suitable for everyday use. Hypoallergenic adhesive and skin-friendly: Our high-quality CGM adhesive patches are latex-free, safe, soft, breathable and made from innovative medical material. 14 days of long-lasting waterproofing and breathability: The unique manufacturing process ensures that our freestyle libre adhesive patches are patented, advanced, strong adhesion, suitable for bath, training and swimming. No holes and no glue in the middle: 7 cm perfectly matched patches have been tested for much easier application even with one hand. 100% acrylic adhesive pads for complete protection and easier replacement Each package under strict quality control meets the requirements of continuous use; Detailed instructions help successfully even with the first patch. You'll love it