Birchbox Man Coupon: FREE Winter Essentials Bundle with 6-Month Subscription! Posted by Hello Subscription on November 4, 2018. 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 for 6 months and use coupon code WINTERBUNDLE you’ll get a FREE Winter Essentials Bundle! Valid for new subscribers only. While supplies last.