Shirt Nerds is an independent catalog and community for collectors of RSVLTS apparel. Built by collectors, it documents 7,820 shirt designs dating back to 2012, with sourced details such as release dates, colorways, size runs, retail prices, photographs and convention exclusives. The archive also includes 736 articles about releases and 98 conventions and meetups, helping fans explore the brand’s history by fandom, drop or event.

Visitors can browse the catalog without an account, while a free account lets members track shirts they own or want, record sizes and condition, add personal photos, and keep multiple copies organized. Members can receive alerts when wanted items are offered by other collectors, use a camera scan to identify designs, and list shirts for sale or trade. Transactions are arranged directly between collectors; Shirt Nerds does not handle payments. The site also features recent RSVLTS drops, fandom pages, artist contributions, news and collector-submitted additions.