A sunny day under blue skies over open roads. Tacky, sultry singletrack rolling through pine fresh redwoods... Easy open air can be heavenly, but the transcendental meditation achieved under hellish duress is particularly potent. Just don't forget to hydrate.
This Purist water bottle with MoFlo cap resists stains and tastes better. You can dispense just about anything you want, but water seems like an obvious choice.