The uniform is a pink suit covered with big purple flowers. Attached to the head are two springs with red K's on the tips. The two K's most likely stand for Krusty Krab, or Kuddly Krab. The suit covers the entire body except the face, hands, and feet.
The mascot is a crab that looks like Mr. Krabs.
The uniform comes in different shapes and sizes depending on the body of the person. SpongeBob's uniform is in a square/rectangular shape. Squidward's uniform is tall and skinny. For Mr. Krabs' uniform, the springs and K's are separated on two hats which he wears over his eyestalks. At the end of the episode, Gary also appears to be wearing a pink flowered costume (or SpongeBob may have painted his shell).
Role in series
The uniforms were made by Pearl after taking over the Krusty Krab business, renaming it The Kuddly Krab. The uniforms were mandatory apparel for the Kuddly Krab employees.
Other than these uniforms, there is also a costume of the Kuddly Krab's mascot.
It is unknown what has happened to these uniforms after the episode, with the exception of Squidward ripping his uniform in half prior to quitting his job. SpongeBob may most likely be keeping his uniform in his closet, considering that he was still wearing it after bringing the Kuddly Krab material into his house.