1) featuring an extra slip resistant 2) sole, heel strap to keep the foot in place and multiple ventilation ports that allow air, sand and water to easily slip through the vents 3) bright color, anti-slide, anti-bacterial, waterproof, wearable, light, moulding at one time 4) good quality, customization available 5) with back tape, without back tape and with printing all available 6) customer's logo available under the sole and back strap 7) faster delivery time as soon as we got the order