Rolling bag that fits under the seats?

[Rowdysmom]

Is there a small bag on wheels that will fit under the aisle seat? If so, brand and name please. Thanks in advance

[chgoflyer]

I'm not aware of a specific brand/model. But if so, it would need to be very small. Be aware that the under-seat space varies substantially by seat and plane type (700 vs 800). On the newest 800's the aisle under-seat area is quite small compared to the middle or window seat.

The aisle seat in this pic is the far right.