I can see the discussion now...

DM: You open the chest to find a Mace of Smiting, a scroll of Greater Invisibility, a +2 rapier, and Gloves of Thievery.

Paladin: I'll take the smitey one.
Wizard: I gotta have that scroll.
Thief: I call dibs on the rapier.
Fighter: Say what now?

Incredibly awesome magic item for any rogue-type character with lock-picking skill.

It doesn't requires attainment, gives straight huge bonuses to specialized skills, can't be see and is uncommon! Way over the top!

Quote from DiceFarmer >>

I can see the discussion now...

DM: You open the chest to find a Mace of Smiting, a scroll of Greater Invisibility, a +2 rapier, and Gloves of Thievery.

Paladin: I'll take the smitey one.
Wizard: I gotta have that scroll.
Thief: I call dibs on the rapier.
Fighter: Say what now?

I would agree, but you don't even need to attune to them.

You could pocket them and just put them on every time you have something to unlock

Gave these to my player but decided to interpret it literally. When my player puts the gloves on his hands disappear and therefore so do his hands. 🤣

Quote from morriseisley >>

Gave these to my player but decided to interpret it literally. When my player puts the gloves on his hands disappear and therefore so do his hands. 🤣

 That is amazing! I am going to have to do that.

And here I was thinking of having my Artificer learn to make them strictly because they'd keep him warm while leaving his hands visible.

Quote from morriseisley >>

Gave these to my player but decided to interpret it literally. When my player puts the gloves on his hands disappear and therefore so do his hands. 🤣

 That is not a literal interpretation.  Air is invisible, but obviously you can see what is on the other side of it.  Did you mean that you interpreted it liberally?

Do anyone got an idea to why this item aren't showing on the inventory list in DnD beyond? It's from the base DMG so it aren't for some campaign or anything... it just don't show as an item it can find?!?

I was looking for it as well. So I just copied and pasted the item as a custom item

Quote from Lungo >>

Do anyone got an idea to why this item aren't showing on the inventory list in DnD beyond? It's from the base DMG so it aren't for some campaign or anything... it just don't show as an item it can find?!?

 It shows for me.  Note that it's part of the DMG, not the free rule set, so you'd need to buy the DMG from DDB first.

Been playing D&D for many many years, and never really felt a Rogue before. I finally decide to lean in to a Swashbuckler, Zorro/Puss in Boots/Inigo Montoya character. I decide to go hard into Sleight of Hands with Expertise RP, the hell out of it... 4th Session in, level 1, we find these I now have a +12 Sleight of Hand. If it isn't nailed down, I am lifting it. LOL

Get some manacles and you can bind anyone easily that is grappled, incapacitated or restrained. Very funny combo. 

Quote from Lungo >>

Do anyone got an idea to why this item aren't showing on the inventory list in DnD beyond? It's from the base DMG so it aren't for some campaign or anything... it just don't show as an item it can find?!?

 It's because they are invisible when taken off. 

They are in DnD Beyond Inventory for a character, I just checked.