Suggest buying two packs of Velcro for one curtain!

   Fine small package Velcro back adhesive is waterproof and sunscreen super strong back adhesive! Resistance to high temperature and cold!

   Matters needing attention: a standard screen door (90*210cm) usually requires 2 packs of Velcro(A pack of 10 Velcro strips, each 5cm long and 2cm wide)Other sizes can be increased or decreased appropriately. The fixed door frame and wall should be cleaned before use! Press the glue firmly on the bottom of the Velcro. If you are not in a hurry, let it stand for a few hours and then hang the product with the wool stuck on it.

   The product description: Multifunctional Velcro is divided into two parts, one with hook and one with wool. A piece of wool and a hook, glued together, commonly known as Velcro, on children's shoes and hats. Pull open this thing that has a sound.