RE: Releases for tiny hands.
I use the T.R.U. Ball Stinger JR.
I use the velcro one, but they make it with a buckle too.
The regular sized releases that I tried that had buckles wouldn't tighten down enough for my wrist. One of these days I may get my hands on the JRwith a buckle. I'm not the biggest fan of the velcro.