The Siren series is the step up from the Barrier series, hosting all the advantages, with the addition of some key features to maximize your comfort even more. Features :
• Color blocked side panels
• Zippered expansion at center back neck
• Flat lock stitching to maximize comfort
• Set on bicep cuff
• Welded logo treatment
• Women specific fit

Fit :
• This is meant to fit snug to keep out water, and support your muscle groups. If you want a more looser fit, buy the next size up.