Still lightweight but there is a noticeable difference because the uninsulated bottles really have nothing to them. If you are concerned about weight, I would stay away from the Hydro Flasks – in my opinion, they are a little on the heavy side.
The weight is undeniable heavier than uninsulated steel, but you want that extra heaviness to give your bottle durability, AND coldness, which both our bottle is excellent at providing. To be exact, each bottles weighs in at 0.8 lb’s , more than your plastic bottle, but less than what you expect. Whatever you decide to do, and whatever bottle you go for, just don’t choose an uninsulated bottle, you’ll regret it.