School Uniform
From Inkipedia, the Splatoon wiki
The School Uniform is a Clothing item that can only be obtained through the Inkling Girl Amiibo. It's ability is Ink Recovery Up (Increases ink-tank refill rate while submerged in squid form.)
Complete the 4 missions the Amiibo gives you to unlock it:
05 Floating Sponge Garden ~ Soak It Up! ~
06 Propeller-Lift Playground ~ Whispers on the Wind ~
07 Spreader Splatfest ~ Ink Stains & Teardrops ~
2 Shootion' the Sneeze... The Dreaded Octonozzle!
