Kind of stingy with the absorbent crystals. I have one like this I bought in a store and it has at least double the crystals.

They advertise this for cooling but IMHO they have it backwards. I dry mine out in the summer sun and wear it to soak up sweat. I don't need to add water to my head. It is already dripping.

I'd like to see these redesigned with the goal of absorbing. So with a ton of crystals to work like a baby diaper and instructions on how to dry them safely in the oven.