I purchased this just to haul liquid nitrogen for freeze branding, not to store semen so I can not comment on hold time. The cap frosts for the first hour but then that clears up. The metal tubes are not all drilled to drain, two have solid bottoms for pulling fluid out of the tank if needed. The carry bag is just a blue tank wrap there are no straps on it for carrying... it does stop two tanks from clanging but thats about it. Quick shipping and for what I need perfect.