best travel mug with steeper

Anymore details? Stainless steel or plastic? Heat retention? Double wall or vacuum? I think everyone looks for different things in their favorite mugs.

If you want just a basic travel mug with a steeper, Walmart carries a few, including the Aladdin one. I can’t vouch for how good those are, but they’re under $20, I’m pretty sure.

Double walled prefered but mostly with an easy to use and clean steeper

Corvus I know nothing about this one but just saw it posted:
http://www.wanlingteahouse.com/product.php/344/travel-tea-starter-kit/c367c85893057ace3dd917c406d310bc

I like the Libre Tea Glass! However, I think it’s a bit over $20, but under $30 depending on size you get. I am giving one away on my blog if you are interested though :) www.theteacupoflife.com