From Alpinestars City Collection the Stella Siren is a stylish lightweight cotton based womens jacket designed for city riding and casual wear.ulli Cotton based outer fabric with double PU coating.liUltra-low profile lightweight CE approved shoulder and elbow protectors with closed cell memory foam offer impact protection and allows comfortable casual wear.liDedicated female specific cut and sizing.liReflective fabric inserts. li Two flat pockets on chest.liTwo hand warmer pockets.liExclusive trims and labels from Alpinestars City Collection. ul