Michael Vick has signed an endorsement deal with Lutte Licensing Group, maker and distributor of Core Synergy, a titanium-infused silicone wristband. In January, Vick signed a two-year contract with Unequal Technologies, a provider of the football pads he wore most of last season. Vick lost all his endorsements following his 2007 arrest and conviction on dogfighting charges, for which he served 18 months in federal prison.