Talk to me about mats for active side sleepers

I’m an active side sleeper

Thermarest Prolite works okay for me,  I just use the regular size – 20 inch wide, 72 inch long tapered at foot.

Since the Prolite is only 1 inch thick, you don’t roll off of it.

I sleep okay on it.  Closed cell foam pads are not comfortable for me, but I used to use them.