You know those perfect mornings that you can wear shorts and sandals and still be really comfortable? You know what I'm talking about. You're perfectly comfortable. Not too hot at all. When you coast down a tree covered decline you get the slightest chill, but climbing the other side brings the heat to back to your chest and fingertips. The heat doesn't feel like you're breathing in exhaust from a diesel engine. The cold isn't nearly threatening enough to raise an eyebrow. You don't need special clothes to make it tolerable. Shorts, t-shirt and a bike. That's all those mornings need.