At Siam Park in Tenerife, often ranked as the world's best water park, official water shoes (branded "Siam Socks") typically cost between €10 and €12 as of early 2026. These are essentially thin, neoprene-like socks with a rubberized grip on the bottom, designed to protect your feet from the hot pavement and provide traction on the stairs. While you can bring your own water shoes, the park's official versions are specifically "ride-safe," meaning you are allowed to wear them on almost all the slides, including the high-speed ones where bulky shoes might be prohibited. Many visitors find them to be a necessary investment, especially during the peak summer months when the artificial white sand and stone paths can reach high temperatures. They are sold at the "Siam Mall" gift shops near the entrance and at various kiosks throughout the park.