Only $7.95 on Amazon right now!
I love this very sturdy BPA free grip handle made by Ozark Mountain Outfitters. I have an RTIC tumbler and it fits perfectly. I had the hardest time picking up my tumbler when it was full before I got this grip handle. It will also fit the YETI Rambler, BOSS, Kodiak, SIC, Ozark Trail, Thermik, Frosti, Engel, Polar Pad, Gird Gear, Eskimo, Iceberg, Magnum Steel, ICONIQ, Smart, K2, Titan, Bison, Epic, and Kyro Kup.
Fits perfect in my Jeep cup holder and the cup holder of my folding chair I take to my kids ball games.
Or Visit their website at http://www.ozarkmtnoutfitters.com/