Board Thread:Game Discussions/@comment-24.4.142.221-20131203042313/@comment-5307574-20131203145833

Use them on enchanting other armor. Remember that's the best to use Fusion Boost Armor to enhance when your good armor (3 star or better) has almost max level. From fusing these armors you would propably get Glacier Armor, which stats are REALLY BAD, and it's worth 6x Times more than 2 fusion boosts. So just use them to enhance your almost maxed armor. Hope I helped ;]!