Iron Flask Narrow Mouth Bottle

The double-wall insulation is designed to keep beverages cold for up to 24 hours. While external temperatures can affect performance, it reliably maintains a chilled temperature throughout a standard workday or workout.

The narrow mouth design is excellent for spill-free drinking, but it does require a bottle brush for thorough cleaning. You won't be able to fit a standard sponge inside, so a dedicated brush is recommended to reach the bottom effectively.

No, the exterior is sweat-proof. The double-wall construction prevents condensation from forming on the outside, so you can safely place it on wood surfaces or inside your bag without worrying about moisture damage.

Yes, the stainless steel construction is suitable for hot beverages. It will keep them hot for extended periods, though you should be careful when drinking directly from the spout lid as the liquid may remain very hot for a long time.

The lid is specifically engineered to be leak-proof. As long as the spout is securely closed, you can carry it in a bag or backpack without worrying about spills or leaks.