Black Friday Weekend. 20% Off Your Purchase online and in-store at Athleta. Use code BOOST at athleta.com. Restrictions Apply. Ends 11/27. This is a rare and awesome deal! Take this chance to snag a discount on whatever you've been eyeing at Athleta. This is always perfect place to grab some cool new workout gear or just comfy lounging attire. This discount applies to Athleta GIRL too! The first time it's ever been on sale!