1. Dual Material Design (Silicone + PU): Combining the soft elasticity of silicone with the stability of PU material, these heel cups offer excellent cushioning and support, especially for areas that need extra heel padding.

2. Heel Cushion Protection: The gel heel inserts effectively absorb impact from the ground, reducing pressure on the heels during walking or running, helping alleviate heel pain and plantar fasciitis issues.

3. Adjustable Height: Some heel cups are available in different heights, allowing users to choose the appropriate level for their needs, particularly beneficial for individuals with arch problems or those looking to increase height.

4. Non-Slip Design: The bottom is designed with anti-slip textures, ensuring the heel cup stays in place within the shoe, providing better stability.

5. Comfort and Breathability: The breathable design and high-quality materials keep the feet dry and comfortable, even during extended use without feeling stuffy.

6. Wide Applicability: These heel inserts are suitable for a variety of shoe types, including athletic shoes, dress shoes, and casual shoes, making them ideal for everyday wear, sports, and people who stand for long periods.