1. 1.5/2.5/3.5 cm, 3 kinds of height increase can be selected 2. Lambswool warm cushion surface, boost soft elastic sole 3. Fit the curve of the arch, U-shaped heel cup protection, not tired feet 4. The bottom of the flower texture raised, increased friction more non-slip 5. Material: Boost particles 6. Suitable for gender: unisex 7. Suitable for shoes: sports shoes, canvas shoes, boots, etc.