Which is better for under seat on a plane? City Essentials Duffle 28L or City Essentials 25L? They both look like duffle bags - do they both fit under the seat or should I stick to the smaller one? What’s the actual difference?

https://shop.lululemon.com/p/bags/City-Essentials-Bag-25L//_/prod11680344?color=0001

https://shop.lululemon.com/p/bags/City-Essentials-Duffle-Bag-28L//_/prod20002367?color=0001