This is a Champion Reverse Weave sweatshirt. It has a logo I haven't seen before on the market, and has moderate damage around the neck and wrists. There's also the brand's signature logo on the lower part of the left sleeve. There's no tag, so I can't confirm the size, but based on the fit, I estimate it's XL or larger. I've included two photos of me wearing it (174cm, 63kg) for your reference. You can wear it with a similar silhouette to the damaged sweatshirts worn by Daiki Tsuneta of King Gnu and millennium parade, and Takahiro Kawashima of kinema and pablo vinci. It looks great worn on its own or as an inner layer, so I highly recommend it.