Other than that, the bag feels sparse. There are no outer pockets or webbed pockets. Above the shoulder straps and running down the back is a lined "cold storage" chamber that Slappa says is perfect for keeping snacks and beverages chilled. Since it rides down along your back, however, too many cans of soda will make your spine feel as if it's lying on gravel. Making that snack pocket long and thin instead of cooler-shaped strikes us as an odd design decision.
The Spyder felt perfectly comfortable on subway commutes and long walks, thanks to the extra-padded and well-fitting shoulder straps. An included MP3/phone pouch snaps onto the strap for easy access. At $100, it's expensive. It's also heavy--4.5 pounds empty, thanks to the heavy-duty material and padding.
The Spyder Pro has a 180-day replacement warranty if purchased through retail, or a 360-day warranty if purchased through the company's Web site.