Polyester 707 hoodie! I got it on Amazon, if anyone is interested, comment below and I'll post the link! It's very light and airy so it wouldn't be too bad on hot
707 Cosplay Costume Mystic Messenger Saeyoung Choi Cosplay Zipper Jacket Luciel Seven Hoodies 707 Red Tee Women Short Orange Wig - Cosplay Costumes - AliExpress