Summer-Ready Backpack Vol. 2: Proven -9.9°C Cooling, an Upgraded Model That Reduces Heat and Carrying Strain

This product has launched for advance sale as the second version of the “summer-ready backpack,” which received strong support in the previous project. While retaining its heat-shielding and cooling functions, the new model has been further improved based on real user feedback, including better carrying comfort and storage. It is scheduled to be delivered in time for this summer. ai off is a backpack developed to address summer-specific problems such as heat, stuffiness, and weight. In this second version, the brand has also pursued ease of use and a more comfortable carrying experience. Rather than simply adding functions, the product has evolved into one that reduces everyday stress more comprehensively. The backpack uses a high-performance heat-shielding material developed by Toray, effectively blocking direct sunlight and radiant heat. In testing under 35°C conditions, a plastic bottle placed inside the bag showed a maximum temperature difference of about -9.9°C compared with one left outdoors. This helps protect heat-sensitive items such as drinks, lunch boxes, and PCs, keeping them in a more comfortable condition even during midsummer travel. The upgraded model newly adopts AGS, or Anti Gravity System. The shoulder section flexibly moves with the up-and-down motion of walking, dispersing the impact caused by the weight of carried items. This reduces strain on the shoulders, back, and waist by about 30%, enabling a lighter carrying feel even in summer, when items such as ice packs and drinks tend to increase the load. The back panel includes a “heat control pocket” that can hold an ice pack. When worn, it efficiently cools the wearer’s back and reduces discomfort caused by heat. In this model, the stability of the ice pack and ease of insertion and removal have also been reviewed, resulting in a more user-friendly design. Storage capacity and convenience have also been significantly upgraded based on user feedback. Improvements include added pockets for easier organization, a newly installed integrated front pocket accessible from two directions, a new belt that allows the bag to be fixed to a suitcase, and the continued expandable design that adjusts to luggage volume. The backpack is designed for a wide range of situations, from daily use to business trips and travel. The Makuake project runs from April 23 to June 29, 2026. Quantities are limited, with discounts of up to 30%, and rewards are scheduled to be delivered before summer. ai off is a Japan-born bag brand created from the concept of a “wearable parasol.” By applying the heat-shielding performance of parasol materials to bags, it prevents heat buildup around the back and belongings, proposing a new style that can be carried comfortably even in midsummer. The brand aims to continue delivering new-concept products that combine design and practicality for modern people who want to stay smart across seasons and situations. Company name: Hobby Co., Ltd. Representative: Nobuyuki Takahashi Head office: Imon Mitake Building 3F, 1-20-1 Shibuya, Shibuya-ku, Tokyo 150-0002, Japan Business: Wholesale and retail sales of men’s and women’s fashion accessories