For the most part, you're someone who likes to leave things up to chance when you ride. You look up at the sky when you head outside, not the radar, and you wear what you feel like, unconcerned with changing temperatures or possible weather that may occur a few miles into your day. Most of the time, you'd say this method works just fine, but when you grow tired of trying not to shiver through clenched teeth at the top of your next big climb, feeling your shoulders and neck lock up with tension as you begin your chilly descent, a piece like Santini's Guard 2.0 Vest would be a wise investment in preparedness.