Sometimes it's nice to go with a classic choice for Father's Day. When it comes to water bottles, nothing is as classic as a Nalgene. Thankfully, this water bottle company has evolved with the times and now carries a robust line of super-functional, well-designed bottles. Nalgene bottles are great to bring to the game, to stay hydrated at the park and to fight off thirst at work. Getting your dad a Steel, Flask, Oasis or one of Nalgene's other kinds of bottles will let him know you care and prevent him from needing any bottled water.