What I TestedTo promote the launch of its activewear, Amazon sent me a box of goodies to test. Amazon Y-Back Sports Bra ReviewThis sports bra is made from Amazon’s signature FormFlex fabric, which is soft and breathable. Amazon High-Waist Biker Shorts ReviewOut of the three products I tested, these biker shorts were my favorite piece. For the price point, I think there is great value in the Amazon Essentials’ activewear pieces. Shop Editor-Selects From Amazon Essentials Activewear