Reddit reviews Kung Fu Sash - Nylon - Red

The pants that Garo are wearing are traditional Kung Fu light pants. You would normally wear a traditional top with them but Garou prefers the modern skintight turtleneck: http://fujimae.com/gb/kung-fu-wu-shu-tai-chi/676-traje-de-kung-fu-botones-blancos.html The sash is probably more for decoration than holding the pants up, unless the pants are made traditionally without an elastic waistband.

Compare to what Bruce Lee is wearing, and it's not surprising it's very similar: https://www.aliexpress.com/item/Bruce-Lee-classic-Chinese-kung-fu-slippers-cloth-shoes-Wing-Chun-martial-arts-tai-chi-shoes/32804589315.html?src=google&albch=shopping&acnt=494-037-6276&isdl=y&aff_short_key=UneMJZVf&albcp=829384684&albag=48097131728&slnk=&trgt=313354690488&plac=&crea=en32804589315&netw=s&device=c&mtctp=&gclid=CjwKEAjw387JBRDPtJePvOej8kASJADkV9TL9CdmPRdHknZ1AApfAVH86k9_Yypk3TyTZCTYPUdexRoCr_vw_wcB

You might just be able to go for something like this: https://www.amazon.com/Pants-Martial-Clothing-Cuffed-Ankles/dp/B00ZYEK3OU/ref=sr_1_1?ie=UTF8&qid=1496607030&sr=8-1&keywords=wing+chun+pants and then buy a sash separately: https://www.amazon.com/Kung-Fu-Sash-Nylon-Red/dp/B005E1ANVQ/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1496607106&sr=1-1&keywords=sash+kung+fu