There are approximately 100 Happy Socks stores across Australia, Brazil, China, France, Germany, Greece, Japan, Portugal, Spain, Sweden, the United Kingdom and the U.S.

[5] Happy Socks had previously been stocked in stores such as Barneys New York and Opening Ceremony; this new collection, designed by associate creative director Paula Maso,[6] moved Happy Socks into retailers such as Selfridges, John Lewis, Urban Outfitters, Tessuti,[7] Bloomingdale’s, Galleries Lafayette, Voo Berlin, and 10 Corso Como.

[8] By the end of 2018, Happy Socks opened 100 concept stores in Paris, London, Barcelona, Los Angeles, Stockholm, and Tokyo.

[14] Film director Robert Rodriguez, known for El Mariachi, From Dusk Till Dawn, and the Spy Kids franchise, created “Sock 'Em Dead,” a short promotional movie starring Madison Davenport (From Dusk Till Dawn: The Series) as an actress making a vampire film who utilizes socks as a weapon.

[17] Happy Socks has done collaborations with celebrities, brands, and musicians such as Iris Apfel, Ellen Von Unwerth, André Saraiva; Adidas, Pharrell's Billionaire Boys Club, and Giles Deacon; A$AP Rocky, Miike Snow, Steve Aoki, Snoop Dogg[18] and Rolling Stones.

[19] In April 2019, Happy Socks released a short film collaboration with David Hasselhoff called "The Hoff's Day Off," which includes swimwear in colorful prints and summer accessories for men and women.

[2][22] The same year, the company also released a Pippi Longstocking collection, a Zandra Rhodes collaboration, and a series of Monty Python socks.

[29][30] In 2024 the company engaged in several collaborative efforts, including Awake NY, Rebel Walls, Elton John, The Beatles, and The Rolling Stones.