I have a 70 pound bag that has a water core to it.
I can't remember the brand-name right now, but it is pretty nice.
How well does leather stand up to being drenched in sweat I wonder?
is it a century hydrocore? i know those come in 70lbs and are quite common. its not leather is it? i believe the salt in the sweat would cure the leather more and dry it. nothing bad.