R6B and Stack Support Reconstruction of Hanesbrands Japan's 'Champion Official Online Store'

R6B Inc. (Headquarters: Setagaya-ku, Tokyo; Representative Director: Junichi Morihashi) and Stack Inc. (Headquarters: Shibuya-ku, Tokyo; Representative Director and CEO: Ryosuke Fukuda) are pleased to announce that they have jointly supported the construction and development of the 'Champion Official Online Store' (https://championstore.jp/), which was renewed and opened on April 22, 2026, by Hanesbrands Japan Inc. (Headquarters: Shinjuku-ku, Tokyo).

### Background In recent years, apparel e-commerce has required not only advanced sales functions but also an integrated design that includes brand experience, customer experience, and store linkage. In particular, responding to complex requirements such as 'pre-order sales' for popular products, store-EC integration, and personalized CRM measures has become the key to competitiveness. While Hanesbrands Japan's 'Champion' brand has a long history and globally established brand value, further strengthening the digital experience in Japan had become a challenge.

### Support Details R6B and Stack supported the renewal focusing on the following areas:

**Renewal of EC Foundation (Shopify)** - Adopted Shopify for its flexible scalability. - Functional expansion using APPs and scalable configuration design.

**Data Utilization and Core System Integration** - Implementation of the core system 'SQ' provided by Stack. - 'SQ' integrates and manages order, customer, inventory, and product data, strengthening the linkage between EC and back-office operations. This improved operational efficiency and maximized sales opportunities.

**Implementation of Diverse Sales and Purchasing Experiences** - Access restrictions (member-only/time-controlled). - Pre-order sales functions. - Automatic campaign start/end control. - Product segmentation control. - Introduction of virtual fitting functions. - Implementation of gift wrapping and novelty gifts.

**Integration of Store and EC (OMO Support)** - Store inventory display. - Expansion of customer service experiences on EC. - Realization of in-store pickup for EC inventory. - First-time discount functions for both EC and stores.

**Strengthening CRM** - Redesign of the point program. - Establishment of new membership stages. - Flexible design of membership benefits using Shopify Flow. - Realization of marketing automation through Klaviyo × SQ integration.

### Project Features This project emphasized the balance between 'brand experience' and 'sales function.' Beyond a simple EC site renewal, it aims to build long-term customer relationships by realizing communication optimized for each individual customer. While supporting sales methods such as pre-orders, it achieved a UI/UX design that does not compromise the brand's worldview. Furthermore, by creating an integrated design across EC, stores, CRM, and core systems, it has established a foundation for medium-to-long-term growth.

R6B and Stack will continue to promote the digital growth of companies through EC construction centered on Shopify, combined with support for CRM, data utilization, and core system integration.