Specific: Material: Surface: Nano-friendly rubber Middle layer: cotton elastic cloth Bottom layer: environmental protection silicone anti-slip particles 3 colors: black, rose, light blue sizes: S is suitable for Euro code 32-35, length 21.5cm M is suitable for Euro code 36-39, length 23cm L is suitable for Euro code 40-43, length 25.5cm XL is suitable for Euro code 44-47, length 26cm   Instructions: The sole must be clean and dry, otherwise it will affect the viscosity and it will not stick firmly. 1. Sit down and clean your soles. 2. Tear off the toe part of the release paper first, taking care not to tear it off all at once. 3. Extend the toes First stick your thumb to the other toes, and don't wrinkle. Press down on the curvature of your toes. 4. Pinch the end of the foot pad to tear off all the release paper, first attach the heel, and then flatten the midfoot and arch. 5. If there is a little wrinkle, tear off the unattached part and re-level it. Do not leave any unglued part. It is necessary to completely paste the skin.   Note: This product is a beach insole that can be walked on the beach and in shallow water. If you need to swim, please wear swimming fins.
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