Nexus Mods user Niero has really hit it out of the ball park with this mod for Fallout 4. Called the Institute Expeditionary Suit, part of the CROSS collection is absolutely remarkable. It’s available on both PC via NexusMods and Xbox One.
It’s one of the most detailed armor mods I have seen, with it offering fully HD textures and meshes. When wearing this full outfit in Fallout 4, it provides total immunity to all sources of radiation, making it great for areas such as The Glowing Sea.

Some other features from this mod include being able to customise it whilst out exploring the Commonwealth. From your Pip-Boy, you can customise the outfit whilst wearing it to change things such as opening the jacket, placing the mask on the belt and even loosening shoulder straps. There is simply too much to list.
Lore
Here is an excerpt from the Lore section on the Nexus Mods page
As well as all the amazing features already included, there is an optional skin pack which can be installed through gumroad. It’s a great way to support the developer and allow them to work on more high quality mods in the future.