What you wear to the "Matterhorn" depends entirely on whether you are visiting the theme park attraction in California or the actual mountain in Switzerland. For the Disneyland attraction, casual theme park attire is best, but be warned that the Matterhorn Bobsleds can involve some light splashing, so moisture-wicking fabrics are a plus. For the actual Matterhorn mountain in Zermatt, Switzerland, you need serious technical gear even if you are just hiking the base. In 2026, mountain weather remains notoriously unpredictable. You should use a "Three-Layer System": a synthetic or merino wool base layer for moisture management, an insulating mid-layer (like a down or fleece jacket), and a high-quality GORE-TEX waterproof outer shell. Sturdy, waterproof hiking boots with excellent ankle support are non-negotiable for the rocky terrain. If you are a spectator viewing the peak from the Gornergrat or Klein Matterhorn cable car stations, you still need a heavy jacket, sunglasses (to combat "snow blindness"), and sunscreen, as the UV radiation at 3,883 meters is significantly more intense than at sea level.