allbirds Women's Natural Flow Crop Tank Sports Bra Green Hush Activewear Workout Designed to help keep you cool and comfy, the Flow Crop Tank for your activewear wardrobe. Product Features Best For: Everyday wear, hiking, pre or post workouts. Cropped length Body/Lining: 43% Tencel™ Lyocell, 30% Recycled Nylon, 18% Merino Wool, 9% Elastane. Bottom Band: 61% Nylon, 20% Polyester, 19% Elastane allbirds Women's Natural Flow Crop Tank Sports Bra Green Hush Active Workout XL