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About Fair Harbor
Fair Harbor is a sustainability-focused apparel brand that transforms ocean-bound plastic into premium beachwear. With an expanding product line and a visually rich site experience, performance was becoming a critical growth lever - especially as mobile traffic surged.
The Challenge
Fair Harbor’s product discovery relies on smooth, fast navigation across PLPs and PDPs. But as their catalog grew, so did load times - causing friction that disrupted the shopping flow and suppressed conversion potential.
The Solution
Nostra implemented a high-speed experience for a segmented A/B test, optimizing core web vitals and cutting performance bottlenecks across key pages.
Key performance wins:
- Time to First Byte (TTFB) decreased by 37%
- Largest Contentful Paint (LCP) improved by 15.46%
These improvements made pages render significantly faster, allowing customers to start engaging with content almost immediately.
The Results
- + $3.50 increase in average order value for users on the faster experience
- Increased PDP views per session
- Personalized upsells and cross-sells load instantly—on-site and in cart.
- Smoother browsing → deeper product discovery → higher cart totals
Why It Worked
Site speed isn’t just a backend metric—it drives real-world behavior. With faster load times and quicker visual feedback, customers were able to browse more efficiently, view more products, and build bigger baskets. Small technical gains in speed created outsized gains in revenue.
