1. Octopus 3.0 series, lightweight and torsion-resistant; 2. Selected fabrics, comfortable and breathable; 3. Anti-mildew and antibacterial insoles, healthy and environmentally friendly; 4. Strap structure, easy to put on and take off; 5. Foam in the heel, improves comfort and does not rub the feet; 6. Basic series, easy to match with everyday wear;