The Gravity Gloves and Headcrab bonuses in Death Stranding are not just for show.
When the PC version of Death Stranding was officially announced, Kojima Productions revealed a neat little Half-Life-themed promotion.
Owners of Death Stranding on PC will receive the Gravity Gloves from Haf-Life: Alyx, and the Headcrab headwear. Today, Hideo Kojima announced that these items actually confer in-game bonuses, though didn't detail what those would be.
Death Stranding has various items that offer gameplay advantages, such as the Otter Hood, which is a reward for completing Conan O'Brien's mission. The Otter Hood lets you swim faster, so it's possible a similar upgrade awaits players who acquire the Half-Life items.
Interestingly, though, this could indicate that both will be mission rewards, not necessarily a free bonus. Unless, of course, they're skins for existing items. The Gravity Gloves, may just have the same function as the in-game Power Gloves.
Death Stranding is out June 2 on PC.