Global cutlery manufacturer KAI Corporation (Headquarters: Chiyoda-ku, Tokyo; President and COO: Hiroaki Endo) has launched a new "Wide Opening Multi Silicone Bag" from its silicone storage bag lineup, which can be used not only for food storage but also for various cooking tasks. The product became available on January 26, 2026 (Monday) at the KAI official online store and at specialty stores and home centers nationwide※1.
※1 Availability dates may vary by store.
The material is made from 100% platinum silicone with excellent heat and cold resistance. Thanks to its wide temperature tolerance, it can be used in microwaves, ovens, hot water baths, refrigerators, and freezers. The bag handles everything from food preparation to cooking and storage in a single container, reducing the number of dishes to wash and making cleanup easier.
The newly released "Wide Opening Multi Silicone Storage Bag" features a wider bottom and opening compared to existing products, allowing it to be used as a bowl substitute. The large opening structure makes mixing easier and provides stable usability, expanding cooking possibilities. The bags come in two muted colors that blend easily with any space: Old Raspberry and Beige Gray.
According to research, about 70% of people find summer cooking burdensome※2, with many citing "cooking with heat in hot weather" as particularly challenging※3. The product supports microwave and oven cooking, eliminating the need for stovetop heat, making the kitchen less stuffy during hot seasons and enabling convenient, comfortable cooking.
Additionally, in recent years, there has been a growing trend of choosing microwaves and microwave ovens as alternative cooking appliances to stovetops※4. This product completes multiple cooking steps in a single container, expanding cooking options while reducing the tools used and dishes to wash, thereby lightening the burden of daily cooking.
※2 July 2024 Foodist Service Survey, men and women aged 20-60, n=207
※3 From DelishKitchen "Summer Cooking" survey (https://biz.delishkitchen.tv/blog/trend-summer-2025)
※4 2025 "Freeasy Survey: https://freeasy-survey.com/"
Wide Opening Multi Silicone Bag 1000ml
Wide Opening Multi Silicone Bag 1000ml Old Raspberry
Price: 1,540 yen (tax included)
Wide Opening Multi Silicone Bag 1000ml Beige Gray
Price: 1,540 yen (tax included)
Product Features
Made from 100% platinum silicone with excellent heat resistance, cold resistance, and durability, the bag can be used for everything from cooking to storage. Being reusable, it's environmentally friendly and economical. All cooking and storage can be completed in a single silicone bag, reducing dishes and saving time. The bottom and opening are wider than existing products, providing a stable feel during use.
Cold-resistant to -40°C, suitable for refrigeration and freezing.
Perfect for meal prep and temporary storage!
Dishwasher safe.
Made from one-piece molded silicone, making cleaning easy!
Microwave compatible. Cook without heat during hot summer, expanding your recipe repertoire!
The large opening structure allows you to add ingredients, mix, and toss with seasonings directly in the bag.
Not just for cooking, but also useful for baking.
Freeze with marinade, then use directly for hot water bath cooking!
Tips for Sealing
Material Features
The product is made from 100% platinum silicone※5, which is also used in medical equipment and infant products. It's BPA (Bisphenol A) free※5, making it safe for pregnant women and infants (complies with Food Sanitation Law). Platinum silicone has superior heat and cold resistance compared to regular silicone rubber and can withstand rapid temperature changes. Its excellent flexibility and high tear strength make it resistant to tearing, suitable for repeated use.
※5 Complies with Food Sanitation Law
Recipe Suggestions
The official website offers cooking and baking recipes that can be easily made using silicone bags.
Chestnut Rice
Peel the chestnuts, then leave the rest to the microwave!
Bossam
Rub in the seasonings, microwave, then just let it sit for easy completion.
Shrimp in Chili Sauce
Mix seasonings in the silicone bag, microwave for 3.5 minutes, and it's done.
Pound Cake
Bake without parchment paper or greasing!
Pudding
Make pudding for four people at once.
Reduce dishes and make cooking easier.
KAI Original Recipe Collection
The collection features original recipes supervised by professional chefs and culinary instructors, as well as recommended recipes using KAI products.
Recipes available here▼
https://www.kai-group.com/fun/recipe/item/siliconebag_recipe/
About KAI Corporation
Founded in 1908 in Seki City, Gifu Prefecture, famous for its cutlery. The company develops over 10,000 items centered on blades closely related to daily life, including personal care tools like razors and nail clippers, beauty tools, kitchen utensils like knives and baking supplies, and medical blades. As a global cutlery manufacturer, KAI handles everything from product planning and development to production, sales, and logistics.
Headquarters: 3-9-5 Iwamoto-cho, Chiyoda-ku, Tokyo
President and COO: Hiroaki Endo
