Unlike many other resource packs, this particular pack is designed to provide a gameplay advantage. The X-Ray Resource pack makes it very clear for you to find what you need in a matter of seconds. No more looking for those sweet, sweet diamonds for hours.
The major benefit of this resource pack is to help you get immediate access to the best mining materials. With the new X-Ray Ultimate resource pack, you can get straight to the good stuff when down in the mines. Some people might just need a bit of a boost when playing Minecraft.