Fake Contacts
From Inkipedia, the Splatoon wiki
The Fake Contacts are a type of headgear in Splatoon. It is a 2-star item produced by Tentatek and comes with the main ability Special Charge Up.
This item can be purchased from Cooler Heads for 2,000 Cash.
Appearance
The Fake Contacts do not appear to change an Inkling's appearance in any way, effectively allowing players to not wear headgear, while still having abilities in that slot. The contacts themselves have the Tentatek logo on the front.