HYKAA is a women-owned swimwear label retailing from its flagship at 960 South Coast Highway 101 in Encinitas's Old Encinitas district, operating under the BlackBook Bikini storefront established in 2015. The in-house HYKAA line cuts all swimwear from imported Italian fabric and assembles each piece by hand in Bali, producing structured bandeau tops with hidden stays and adjustable-tie bottoms that pair with the board-sport wetsuits and surfwear at Bing Surfboards down the 101 corridor. Multi-brand curation stocks L*Space, Frankies Bikinis, Vitamin A, Stone Fox Swim, and Montce alongside the house label, spanning string bikinis through underwire-supported one-pieces in sizes built for both minimal-coverage tanning and full-coverage surf performance. The 101 storefront sits south of the Self Realization Fellowship and north of Cardiff State Beach, placing it in the Encinitas shopping zone where post-beach recovery at Four Moons Spa completes the coastal day cycle. Signature construction uses reinforced four-way-stretch Italian tricot with UPF 50+ rating, double-lined panels, and saltwater-resistant elastane engineered to retain shape after 200-plus wears.