That is a much bigger pad than what I've used! Wow. That's amazing.
I've used a oversized body wrap pad (120V input) and a 24V pad with wall-wart designed for mini-green-house seed planters. The former was comfortable & wrapped in soft, but wasn't a great mousing surface. I do want to point out: in my experience, these are nice for the arm, but notably the keyboard and mouse never really warmed up very much, both remained a bit chill, back when I was in a fairly un-warm draft-y room. It was still really nice to have, but my hands could remain kind of chill, I'd still keep on my nice fingerless gloves. Still, a great addition.
I've used a oversized body wrap pad (120V input) and a 24V pad with wall-wart designed for mini-green-house seed planters. The former was comfortable & wrapped in soft, but wasn't a great mousing surface. I do want to point out: in my experience, these are nice for the arm, but notably the keyboard and mouse never really warmed up very much, both remained a bit chill, back when I was in a fairly un-warm draft-y room. It was still really nice to have, but my hands could remain kind of chill, I'd still keep on my nice fingerless gloves. Still, a great addition.