The snowboard (tier 4) is an item used in the 2014 Christmas event. It can be equipped and used to slide down the large snowramp at the Lumbridge Crater. After having earned 4,000 reputation (for a total of 7,500 reputation), it will turn into a snowboard (tier 5).
As of an unknown update, players are also allowed to take their snowboards outside of the crater.
Although it has a "Wear" option, it could only be equipped during the 2014 and 2015 Christmas event.
- ^ Jagex. Mod Neena's Twitter account. 18 December 2014. (Archived from the original on 18 December 2014.) Mod Neena: "this isn't a bug. We've changed it so players can take there snow boards elsewhere =)"