outdoor tortoise pen??

my kids want a tortoise ..so this spring i'm going to build an outdoor pen ,my questions are i live in western pa so what kind of tortoise does well in Pa weather i will bring it indoors in the winter,it will stay outdoors spring ,summer fall..but i dont want one that gets giant...thanks

A list of tortoise varieties and sizes from TortiseCare.org
Be aware that they are a big commitment and live VERY long..:)

Sulcata Tortoises: 20-26”
Leopard Tortoises: 14-16”
Redfoot Tortoises: 12-15”
Yellowfoot Tortoises: 15-17”
Greek, Russian, Hermanns Tortoises: 6-8”
Indian Star Tortoises: 6-8”

Hope this helps!

A little late there, Capray. xD