Sam Puckett (Jennette McCurdy) wears this Maroon and Blue Color Block Short Sleeved Sweater Tee in this episode of Sam & Cat.
It is the Topshop Surf Rider Two Tone Sweat. Unfortunately this is sold out

Buy a similar one HERE for $92

All outfits from Sam & Cat
All outfits from Sam & Cat Season 1 Episode 21
Sam Puckett’s Other Outfits