high_on_sugar2.1.zip is a release file of the Minecraft resource pack High on Sugar, made for Minecraft 1.7.2. It was published on November 20, 2013 and is 7 MB in size. For the full description, screenshots and every other version, visit the High on Sugar resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.