You can never have too many striped pieces.  It's just one of those multi-personality patterns that works in nearly every wardrobe.  This one that I picked up last week, with the contrasting back and the bold dark stripes has become quite the staple in mine... even when the temperatures are sweltering -- like this weekend, I managed to step out in this ensemble for an evening of quick drinks with friends.  It wasn't as suffocating as stepping into a car left in the sun all day, but close enough.  That's kind of my ideal climate anyway.