The Clutch Case is a weapon case added to the game in 2017 that contains 17 weapon skins, from Mil-Spec Grade to Covert, with gloves as the rare special item. SkinsMonkey lists every Clutch Case skin with prices for each wear level.
The clutch case was released in the Welcome to the Clutch update, on February 14th 2018. Inside the case there are 17 different community design skins, including gloves skins, available at a special rare rarity level.
The clutch case contains, amongst the 17 skins, 2 covert, 3 classified, 5 restricted and 7 mil-spec rarity.
To open the case, you will need to buy a clutch case key. The keys are widely available at the steam market, as well as other trading bots.
The skins released in the clutch case update include:
Hydra Gloves
Driver Gloves
Hand Wraps
Moto Gloves
Specialist Gloves
Sport Gloves
The 17 weapon skins from this container make up The Clutch Collection, the set that counts in trade-up contracts. The gloves it drops as rare special items belong to no collection.