The Chroma 3 Case is a weapon case released in 2016 that holds 17 weapon skins, ranging from Mil-Spec Grade to Covert, with knives as its rare special item. SkinsMonkey lists every Chroma 3 Case skin with prices for each wear level.
The chroma 3 case was released together with an update on Aprli 27th, 2016. The third case in the chroma series, it contains 17 community-designed weapon skins. The chroma 3 case also contains five special rare knife skins from previous chroma series, now in different finishes.
To open the chroma 3 case you need to buy or trade for the chroma 3 key. When opening, you have a chance to get one of these skins:
The 17 weapon skins from this container make up The Chroma 3 Collection, the set that counts in trade-up contracts. The knives it drops as rare special items belong to no collection.