Birchbox Man Coupon: FREE NFL Coasters with Subscription! Posted by Hello Subscription on January 7, 2019. Subscription Box Coupons & Deals / Birchbox Man Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification For a limited time when you subscribe to Birchbox Man and use coupon code COASTERS you’ll get a 4-pack of NFL football leather coasters FREE – a $35 value! Valid for new subscribers only. While supplies last.