Little Kid Sleeping Bags

Any opinions on what brand of sleeping bag to purchase for my 3 and 5-year olds? I prefer one of the shorter (5 feet long) kid-specific types. Don’t know about the hooded mummy vs. rectangular shape benefits. Our purposes would be both car and backyard camping, maybe sleepovers for the oldest, and of course in-house playing around.

I would say the flat, rectangular kind because you can zip it open and use it flat. They can use it as a bedspread if they want (or make a “tent” out of it, etc.) and when they outgrow it you can use it for picnics or something.