Get a Yeti Roadie 20 (or the RTIC clone)

Yes, that’s the one.

The Yeti Roadie 20 (or the nearly identical RTIC 20) is the sweet spot for a kayak tank well. It’s tall enough to hold a day’s worth of ice and food, but not so wide that it won’t fit in most standard tank wells. The rotomolded construction keeps ice for a full day even in summer heat, and the lid’s gasket seals tight enough that you can sit on it without crushing it.

The only real downside is the price. RTIC is usually half the cost for basically the same performance. If you want to save another $40, Igloo’s BMX 25 works fine but won’t hold ice quite as long and feels cheaper. For a kay