Fake Contacts
From Inkipedia, the Splatoon wiki
The Fake Contacts is a type of headgear in Splatoon. It is a 2 star item produced by the Tentatek clothing brand and comes with the main ability, Special Charge Up.
Purchasable from Cooler Heads for 2,000 Cash.
Appearance
The 'Fake Contacts' do not appear to change your Inkling in any way, but if you look hard you can see that it makes the character's eyes look slightly different.