We bought these to meet the carry-on size limits for our two 7 yr olds.  We had zero problems on four different aircraft with over head clearance.  They were able to fit about 5 complete days of clothes plus a few extra pieces in the suitcase, and then loaded the tote bag with one more outfit, 4-5 books, snacks, e-reader, assorted other kid-paraphernalia, etc.  They were easy to maneuver through crowded airports and the colors were bright and distinctive.  After a cross-country trip on 4 planes, plus numerous other excursions since, they still look and perform like new.  Sometimes the pull-up handle is a little sticky on one of them but other than that the materials, zippers, handles, etc. are great quality.  And my kids are really hard on things!