FrostVault 4lb. Ice Pack, Reusable, Refreezable Ice Block, Mess Free, Recyclable, Designed to Fit Ninja FrostVault

A little weighted but it keeps your items cool for several days. I wish it was a little cheaper money wise but it actually works. It fits directly into my Ninja cooler.

Quality products reasonably priced

Perfect cooler. Cold drawer and divider if needed. Beats the Y hands down.

This thing works great in my ninja cooler

Works very well in combination with my ninja deep freeze backpack cooler

I took these on a 3 day camp trip. I froze them a few days before we left, making sure they were solid. On the day we left, I lined (2) of them in the bottom of my 65qt ninja frost vault cooler, then layed my drinks on top of the ice blocks. I top it off with more ice. The ice blocks kept a nice chill to the cooler and bottom drawers

These ice packs fit perfectly in my Ninja cooler, and honestly, I’ll never go back to regular ice. They’re reusable, so no need to dump melted water all over the grass afterward. At the park, other guests had to stop and buy bags of ice—meanwhile, I just popped in two of these packs and was set for the day. My drinks stayed just as cold as everyone else’s, but without the soggy mess or frozen hands from fishing around in icy water. Plus, cleanup was zero effort: no puddles, no draining, just toss the packs back in the freezer. Sturdy, convenient, and cost-saving in the long run. If you use a cooler often, these are a game-changer.

Great product