By Lee Cutlip Unlike other spring staples — quality chinos and sweaters abound — finding a blazer that’s appropriate for spring, with all of the weird and unpredictable weather that comes with it, is no easy feat. You want a spring blazer to be casual but not frumpy, lightweight but still substantial. Luckily, many brands have recognized the dilemma consumers faced and are increasingly turning out spring-appropriate blazers that look presentable without veering into black-tie territory. Below you’ll find ten blazers, some slightly more casual than others, but all with the ability to make you l…