Must-Have High-Impact Sports Bra: Knix Catalyst Front Zip Sports Bra One editor who wears a 42G bra says she trusts the Knix Catalyst Front Zip Sports Bra ($90) to get her through workouts where she knows she'll need to jump. The bra has adjustable shoulder straps with a hook-and-eye closure in the back so you'll be secure and ready for burpees and jumping jacks. Image Source: knix.com Catalyst Front Zip Sports Bra $90 from knix.com Buy Now