Gainz Box June 2018 Spoilers! Posted by Hello Subscription on May 23, 2018. Subscription Box Spoilers / Gainz Box Spoilers Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Gain[z] Box released the first spoilers of the June 2018 Gainz box! Each box includes: Are you getting Gain[z] box this month?