Design for the Erin Condren Life Planner, however, you can use them in the Happy Planner and Recollections planners. These kits are great for a white space spread or if you don't want all the stickers in the full kit. They also work wonderful in a personal or A5 planner. I like to use mine with my SewMuchCrafting inserts from Etsy.
Disclaimer: Color may vary slightly from photos due to different monitor settings.