Fits most standard 20oz stainless steel tumblers with 3.5" top:
YETI® (10oz, 16oz, 20oz, 24oz), Hydro Flask® (22oz), and many more. *Does not fit tumblers/mugs with screw tops.
Also fits on ALL counter tops, work desks, coffee tables, bathroom vanities, and night stands. Use a cable and clip the NARWHAL on any cooler bag, golf bag, backpack, ski pants, etc. Take your tunes everywhere you go!