Product Features Air Mesh Upper Lightweight and highly breathable, keeping feet cool and comfortable. Quick-Dry & Drainage Special holes let water escape instantly, so your feet dry fast and avoid blisters. Non-Slip Rubber Sole Provides superior grip on wet and slippery surfaces for safe movement. Lightweight & Portable Easy to pack and carry, making them perfect for travel and adventures. Versatile Use Ideal for beach, water sports, hiking, yoga, and casual everyday wear. Warm Reminder 1. Please allow for an error of 1-2centimeters when measuring manually. 2. Please allow reasonable color difference. 3. If you don't know what size to choose, contact us to give you the correct size suggestion.