Bella Dahl Flutter Sleeve Tie Back Shirt in Sage. - size M (also in ) Bella Dahl Flutter Sleeve Tie Back Shirt in Sage. - size M (also in ) Rayon blend. Hand wash cold. Button front closures. Flared sleeve with tie detail. Back keyhole with tie closure. BLD-WS234. B2359 669 302. Los-Angeles based brand, Bella Dahl, designs ultrasoft essentials with a laidback, Southern California vibe. Modern silhouettes, textures, and unique wash treatments combine to achieve the perfect fit with an endlessly wearable feel. Each garment is hand-dyed and treated in Los Angeles to ensure the quality of each piece.