Madewell MWL brown form racerback crop top size XS. More details below. This fully lined crop top has a high '90s-style neckline and a cutaway racerback, making it perfect for yoga workouts or street wear. 16" length (size Medium) Partially lined 82% recycled nylon, 18% elastane Machine wash, tumble dry 172 Madewell MWL Form Racerback Crop Top.