Summer Without Over-Reliance on Air Conditioning: Koala® Mattress Season Change Sale Offers Up to 20% Off on Temperature-Regulating Mattresses

Koala JP Inc. (Headquarters: Shibuya-ku, Tokyo; Representative: Ruslan Psonok) will hold the 'Koala Mattress Season Change Sale' from Friday, June 5, 2026, to Sunday, June 21, 2026, offering up to 20% off all Koala brand products on its official website and at the Koala Aoyama Store. Due to rising temperatures and electricity costs, more people are rethinking their summer sleep environment. Switching bedding to a summer setup before the rainy season and preparing the sleep environment before humidity increases are key to comfortably getting through hot, sleepless summer nights. This is an opportunity to purchase products like the 'Koala Mattress PLUS PolarBands®' and 'Koala Mattress SUPREME PolarBands®', which efficiently dissipate heat and support a comfortable sleep environment year-round, at a discount.

■ Official Sales Site: https://jp.koala.com/

*Koala Sleep Japan Inc. changed its company name to Koala JP Inc. in February 2026.

■ Blog Article: What is the Best Timing for 'Changing' Bedding Before the Rainy Season?

Days are increasing where you can go out in short sleeves, but many households might still have their bedrooms set for winter. In fact, just before the rainy season is the last chance to 'change' your bedding. If you try to switch after the rainy season starts, you face a triple threat: laundry won't dry, futons can't be aired out, and mold can develop from humidity. According to the Japan Meteorological Agency, the average start of the rainy season in the Kanto-Koshin region is around June 7th. In this article, Koala explains how to prepare your bedroom and bedding before the rainy season, based on the Ministry of Health, Labour and Welfare's 'Sleep Guidelines for Health 2023'.

■ Official Blog: https://koala.com/ja-jp/blog/sleep/before_rainy_season_changingclothing/

■ Comfort All Year Round with PolarBands® Technology

For those concerned about night sweats, the 'Koala Mattress PLUS PolarBands®', which has a machine-washable mattress cover, is recommended. For those seeking the ultimate sleep comfort, the 'Koala Mattress SUPREME PolarBands®' is ideal. The proprietary PolarBands® technology dissipates excess heat trapped in the mattress as needed, maintaining a sleep environment that is up to 5 degrees cooler* than previous models for 6 hours. Both feature reversible covers for summer and winter, ensuring comfortable sleep all year round. They maintain temperature balance during sleep, leading to a pleasant slumber regardless of the season. *Based on internal research.

'Koala Mattress PLUS PolarBands®' (Single) 119,900 yen (tax included) is 20% off, saving over 20,000 yen.

■ 120-Day Trial

With Koala®, you can try products (excluding some items) at home for 120 days. If you are not satisfied, free returns and refunds are available nationwide. Koala's goal is to help everyone in Japan sleep soundly and comfortably. *Delivery to remote islands is not available.

■ Details on Official Website: https://jp.koala.com/pages/120-night-trial

■ About Koala®

'Sleep Performance' is Crucial for Sleep-Deprived Japanese!

Japan has the shortest sleep duration among the 33 OECD member countries*. Sleep deprivation leads to decreased daily performance. Koala was founded in Australia in 2015 as a bedding and furniture brand using a D2C (direct-to-consumer) business model. Since entering Japan in 2017, it has continued to develop mattresses that enhance 'Sleep Performance' (quality of sleep) through thorough research.

As a result, in September 2024, the 'Original Koala Mattress' won No.1 in both the 'Recommended High-Resilience Mattress Ranking' and 'Recommended Low-Resilience Mattress Ranking' on the product comparison service 'mybest'. In October of the same year, based on the know-how of previous models, the company launched the 'Koala Mattress® PLUS' and 'Koala Mattress® SUPREME'. Furthermore, in November 2025, the 'Original Koala Mattress' won the Grand Prize in the bedding category of the 'mybest AWARD 2025'. All these products feature simple, sophisticated designs inspired by Australia's beautiful nature.

Under its corporate goal of 'creating a healthier and happier living environment', Koala has donated over 1.5 million Australian dollars to the World Wildlife Fund (WWF), contributing to the protection of endangered species like koalas. In Japan, these donations have also been used to protect endemic species of the Nansei Islands, such as the Amami rabbit and the Miyako grass lizard.

*Based on the 2021 survey by the Organisation for Economic Co-operation and Development (OECD).

Koala Mattress® - Revolutionizing Japanese Bedrooms

By combining customer-centric product development with a D2C model, orders can be placed from home. Furthermore, with enhanced customer service, next-day delivery in the shortest possible time, and a 120-day return/refund policy, it is transforming the purchasing experience.

1% FOR THE PLANET

Its mission is to build and support a network of businesses committed to funding the creation of a healthy planet.

https://onepercentfortheplanet.org/

Numerous Global Awards

The 'Original Koala Mattress' won the Grand Prize in the bedding category of the 'mybest AWARD 2025', awarded to 40 best-buy products selected from over 16,000 products and services in categories like home appliances, cosmetics, and financial services that mybest compared and verified over the past year. Koala products have also won numerous other awards worldwide.

https://koala.com/ja-jp/awards