Introduction
Founded in 1960 by Athanasios Giannikoglou as a family-run garment workshop, LEO XXXL has a long tradition in fashion. In 1981, Leonidas A. Giannikoglou continued the business with a unique focus on men’s plus-size clothing, establishing XXXL as a trusted brand for quality and specialised apparel in Greece.
The Opportunity
As part of their ongoing commitment to improve customer satisfaction and boost sales, XXXL identified opportunities to enhance their checkout process:
- Offer greater payment flexibility: By introducing digital wallets and modern payment methods, they could cater to customer preferences and attract new shoppers.
- Streamline checkout: Reducing the friction of traditional multi-step checkouts could improve conversions and reduce drop-offs.
- Drive sales growth: A more seamless customer journey would increase completed orders and strengthen loyalty.
Partners & Roles
- Simpler provided the checkout solution: instant digital wallets, one-click functionality, and a unified checkout flow across devices.
- Just Online acted as XXXL’s digital agency, coordinating the marketing, user experience, and optimisation strategy. They heavily contributed in promoting awareness of the new checkout options, and monitoring performance metrics to continuously refine conversion flows.
The Solution: Simpler Checkout
XXXL integrated Simpler Checkout to provide their customers with a faster, more flexible way to pay. With Simpler’s plug-and-play solution, XXXL was able to activate multiple payment methods instantly, without added development costs or complexity.
Key features implemented:
- Digital wallets integration: Apple Pay and Google Pay were seamlessly embedded in the checkout flow, delivering security and convenience.
- One-click checkout: Returning customers could purchase in seconds, even directly from product pages or mini-carts.
- Cross-device experience: A smooth, consistent checkout experience across mobile and desktop.
- UX / Marketing alignment (by Just Online): Updating page layouts, calls-to-action, and promotional messaging to highlight the new payment flexibility; ensuring that customers knew about the alternatives via banners, emails, social media etc.
Impact at a Glance (3 months of using Simpler)
📈 +11% YoY sales growth (vs. July - Sep 2024)
🛒 66% of orders completed earlier in the funnel
💳 30% of orders via digital wallets (Google Pay, Apple Pay)
🔄 20% returning shoppers
📱 56% of users checked out via mobile
The Results
Orders shifted earlier in the funnel
66% of orders were completed before the traditional checkout stage, directly from product pages and mini-carts. This showed that shoppers appreciated the ability to buy instantly, capitalising on impulse purchases.
Payment flexibility boosted adoption
30% of orders were completed with digital wallets (Google Pay and Apple Pay), highlighting strong customer preference for secure, fast payments.
Sales performance improvement
Compared to the same period in 2024, XXXL achieved an 11% year-on-year increase in sales.
Checkout share growth
Simpler accounted for 25% of total orders in July & August 2025, establishing a strong foundation for future growth.
Marketing / UX & Agency contribution
Just Online’s efforts in optimising messaging, aligning UX to highlight payment options, and promoting the new checkout features helped raise awareness among customers. Their work ensured that the new checkout flow didn’t just exist, but was visible and appealing, contributing to the higher uptake of digital wallets and early-funnel completion.
“Partnering with Simpler allowed us to offer modern payment options like Apple Pay and Google Pay, while making the checkout process faster and easier for our customers. Just Online’s role in improving our messaging, UX, and marketing made sure our audiences knew and trusted the new checkout features. The results speak for themselves we saw sales growth and happier shoppers without any added technical effort.” – XXXL Team
Conclusion
By adopting Simpler Checkout, supported by the strategy and execution of Just Online, XXXL successfully enhanced its online shopping experience. Customers gained access to digital wallets, one-click purchasing, and a smoother journey—leading to higher conversions and sales growth.
XXXL’s story shows the value of combining technology (Simpler) + UX/marketing (Just Online) + brand heritage: effortless integration, flexible payments, and measurable business impact.
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