The Sigg Traveler Classic Water Bottle (0.6-Liters, Dark Blue) is a beautiful bottle.  The color pops and the style is highly "with it".  I purchased this bottle thinking that it would be the perfect size for me, especially since it's a little bigger than a normal plastic waterbottle, but I typically finish this off in three or four swigs.  This is probably because the water seems so "pure" and clean.