Stay Cool This Summer! Renfro Japan Launches 2026 Spring/Summer Collection with Hiaron

Renfro Japan Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo; Managing Director: Ryota Takahashi), the Japanese subsidiary of one of the largest sock manufacturing and distribution companies in the United States, will sequentially launch its 2026 spring/summer product lineup across various brands.

This press release introduces licensed products from Hiaron, a brand originally launched by Lotte Corporation in 2014 as an instant cooling pack. The product lineup combines Hiaron’s “approachable brand image” with functional features such as cool-touch and quick-drying properties.

*"Hiaron" is a registered trademark of Lotte Corporation. The products featured in this release are manufactured under a licensing agreement with Lotte Corporation.

[Selected 2026 Spring/Summer Product Lineup]

Hiaron is Lotte’s instant cooling pack brand that delivers an ice-cold sensation instantly upon squeezing. With no need for pre-cooling, it offers convenient, on-the-go cooling anytime, anywhere. Its ease of use makes it ideal for sports, leisure, and outdoor events, meeting the sudden need for cooling during hot summer days.

▷ Kids’ Items

・Printed Mini Cooler Towel

A mini cooling towel that delivers a refreshing cool sensation simply by wetting it and shaking it lightly. Perfect not only for wiping sweat during outings but also for helping children stay cool during school commutes. The towel features anti-bacterial and anti-odor treatment to minimize unpleasant smells and maintain a clean feel. Available in three adorable designs: dinosaur, cat, and ice, making daily heat protection enjoyable.

Composition: 55% nylon, 45% polyester

Size: 12×70cm

Patterns: Cat, Dinosaur, Ice

Suggested Retail Price (tax included): ¥1,100

▷ Women’s Size Items

・Cool-Touch Short Socks

Perfect for occasions during hot seasons when you want to “wear proper socks,” these cool-touch short socks offer comfort and style. Made with 100% cotton on the outer yarn for a soft, natural feel and comfortable fit. With a Q-max value of 0.280, they deliver an instant cooling sensation upon skin contact. Their versatile design pairs well with both casual and formal outfits, keeping your feet cool and comfortable all summer long.

Composition: Cotton, Polyethylene, Others

Size: 23–25cm

Colors: Black, White

Suggested Retail Price (tax included): ¥1,480

▷ Men’s Size Items

・Cool-Touch Loungewear

Ideal for relaxing at home during summer, this loungewear combines cool-touch and quick-dry functionality. With a Q-max value of over 0.2, it delivers an instant cool and comfortable sensation upon contact with the skin. The quick-dry fabric prevents stickiness, maintaining a light and comfortable feel even during sweaty seasons. Its moderate stretch and simple design enhance comfort during downtime at home.

Composition: 90% polyester, 10% polyurethane

Sizes: M/L/LL

Colors: Sapphire, Navy

Suggested Retail Price (tax included): ¥3,300

▷ Other Items

・Cool-Touch Blanket

Introducing a cool-touch blanket that feels refreshingly cool upon contact. Made with cool-touch fabric with a Q-max value of over 0.4, it ensures comfort even during hot seasons. The anti-bacterial and anti-odor treatment reduces odor concerns during humid periods, allowing for clean and hygienic use. The reversible design features a cool-touch side and a soft, plush side, allowing users to switch based on preference or mood. When paired with separately sold under-blankets or pillow pads, it enhances your cool and comfortable sleep experience.

Composition: (Outer) 100% nylon; (Inner) 85% polyester, 15% cotton; (Cover) 100% polyester

Size: Approx. 140×190cm (Single)

Colors: Sapphire, Beige

Suggested Retail Price (tax included): ¥3,980

・Under-Blanket

An under-blanket that feels instantly cool when you lie down. Made with cool-touch fabric with a Q-max value of over 0.4, it supports comfortable sleep even during humid seasons. The anti-bacterial and anti-odor treatment helps suppress odor and bacterial growth from night sweats, maintaining hygiene. Equipped with elastic bands on all four corners, it easily attaches to futons or mattresses. When used with separately sold cool-touch blankets or pillow pads, it creates a cool and comfortable sleeping environment.

Composition: (Outer) 100% nylon; (Inner) 100% polyester; (Filling) 100% polyester; (Cover) 100% polyester

Size: Approx. 100cm×205cm (Single)

Colors: Sapphire, Beige

Suggested Retail Price (tax included): ¥3,980

・Pillow Pad

A cool-touch pillow pad that ensures comfortable sleep even on hot, restless nights. With a Q-max value of over 0.4, it delivers an instant cool sensation upon contact, even during humid seasons. The anti-bacterial and anti-odor treatment helps suppress odor-causing bacteria, addressing common pillow cover concerns. Machine-washable for easy care, it stays clean and fresh. When paired with separately sold cool-touch blankets and under-blankets, it enhances your cool and comfortable sleep setup.

Composition: (Outer) 100% nylon; (Inner) 100% polyester; (Filling) 100% polyester; (Cover) 100% polyester

Size: Approx. 43cm×63cm

Colors: Sapphire, Beige

Suggested Retail Price (tax included): ¥1,650

RENFRO CORPORATION, founded in 1921, is one of the largest sock manufacturers and distributors in the U.S. Renfro Japan Co., Ltd., established in October 2012 as its Japanese subsidiary, operates under the corporate philosophy of “We are Game changer / We change the world from the ground up,” continuously challenging norms and embracing innovation in Japan’s traditionally conservative sock industry.

[Company Overview]

Company Name: Renfro Japan Co., Ltd.

Headquarters: 3F, Tennoz First Tower, 2-2-4 Higashi-Shinagawa, Shinagawa-ku, Tokyo

Representatives: Susan C. Beverud, Corina A. Norris (Representative Directors)

Managing Director: Ryota Takahashi

Established: October 2012

Capital: 50 million yen

Business: Manufacturing and sales of socks and knitted goods

Sales Platforms: Official Renfro pages on Amazon, Rakuten, Qoo10, and Yahoo! Shopping