I absolutely love the quality of materials used in Cycology cycle-wear. My recent order of Women's Medium Jersey and matching Medium Vest was disappointing. The Medium sized vest is 5+ inches wider in the chest than matching Medium sized jersey. I emailed multiple pictures to Cycology and they shared the extra 5+ inches is to accomodate a jersey under the vest. Who wears 5+ inches of base layering. Even 2 base layers wouldn't be 1/2 an inch. Who wants a vest with 4 inches of extra fabric filling with air on a bike ride??? They also didn't provide any information on what vest size is similar to their Medium Jersey for me to reorder. Naturally, I returned the vest and kept the awesome jersey.