Under seat luggage

I just purchased today’s special value luggage. I’m going on a touring trip of Europe and have been advised to bring only carry on pieces easily carried on planes and trains. The carry on piece is nice but not enough to bring all of my personal items for a 3 week trip. A perfect complement piece would be an under seat bag with room for personal items and some extra clothes and shoes. I’ll probably buy one from another company but would like to suggest Joy consider adding such a piece to her line. :smileyhappy: