Moterm a8 mini rings planner with 20 mm rings . I changed out the rings and I don’t have the 15 mm ones anymore. The planner is approximately 4 inches across 5 inches long closed. it looks like new, it has no blemishes. I take such good care of my planners. They don’t see the inside of a purse or handbag without a cover. This takes the mini size inserts from Filofax or Etsy. Inserts are approximately 4 inches long and 2.75 inches wide you can punch them with a regular six hole punch on the mini setting. I will send some free inserts with the planner:)