It looks simple. But, it helps the soldier become vigorous.
How to get
It is a part of a promo, between Fortnite Battle Royale and Twitch.
You must be a subscriber to Twitch Prime, which is available for Amazon Prime members.
To redeem, connect to https://www.epicgames.com/fortnite/en-US/twitch-prime-pack
It is free for those in the club.
Objects will appear in the Locker when you have linked.
Twitch Prime Pack 1
Twitch Prime Pack 2