 LIDS Clubhouse operates team-specific professional sports and university athletics retail stores and e-commerce websites.Hat World, Inc. is a subsidiary of Fanatics Inc.

LIDS was founded in Boston by best friends Douglass Karp (son of real estate developer Stephen R. Karp) and his best friend Ben Fischman (son of real estate developer Steven Fischman).LIDS was bought out by Hat World Inc, founded in 1995 and based in Indianapolis, Indiana.