Which hydration pack is best?
One model of hydration pack does not serve everyone's needs.  I have used a couple of brands and like the Camelbak the best.  The one I currently have is a very old model and has functioned flawlessly for years.  The newer ones are much improved and come in a variety of models depending on how much water you want to carry and how much gear, snacks, etc. you want to carry.  Since most of my riding is less than 2 hours, I recently bought the Lobo which has a 70 ounce (1.5 liter) bladder and a small pocket for wallet, cell phone, snack, etc.

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What advantage do clipless peddles provide?
The biggest advantage is with pedaling efficiency.  I have heard that your efficiency can improve as much as 30% with clipless pedals.  This is due in part to minimized loss of contact with the pedal and also to the stiffness of the shoes that are generally used with clipless pedals.  Keep this in mind, your efficiency will improve but it does take some time getting used to getting in and out of clipless pedals.

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