Okay, the user wants me to translate "ski-hat" into Thai. Let me check if it's already in Thai. No, it's in English. So I need to translate it.
First, "ski" is สกี in Thai. Then "hat" is หมวก. So combining them, it should be หมวกสกี. Let me confirm if that's the correct order. In Thai, the noun usually comes before the modifier, so "ski hat" would be หมวกสกี. Yeah, that makes sense. I don't think there's a different term for it. Just make sure there's no common alternative. Maybe หมวกสำหรับสกี? But that's more like "ski hat" with a preposition. The direct translation หมวกสกี is probably the standard term. Alright, I'll go with หมวกสกี.