Small rear slide travel trailer

Hi folks,

I am overwhelmed with the number of travel trailer floor plans on Google so I thought I’d consult the experts ??. I am looking for a travel trailer with a hard walled rear slide out. It needs to be small to fit my needs in terms of towing and storage capacities. So, my question- What is the smallest travel trailer with a hard walled rear slide out that you are aware of?

Thanks in advance,

Hip