"These stickers are a replacement for the stickers that are carried in General Mayhem's "Systar Starship" (70830). I think it's great that LEGO decided to also sell the sticker set as a standalone so that young builders can refresh the starship's supply and don't need to feel like they have to cherish and safeguard the stickers that came with the set. Having said that, the stickers are reusable and can be peeled off (clean) surfaces and placed back on the roll multiple times."