Hamee Co., Ltd., a developer and retailer of smartphone accessories, has launched Chiikawa (Nanka Chiisakute Kawaii Yatsu) designs for its "[Sma-Hie Premium] Peel-and-Stick Smartphone Cooling Sheet." The new designs went on sale on June 2, 2026 (Tuesday) at Hamee's official online store, with rollout to Chiikawa Market, Chiikawarand locations nationwide, and other general merchandise stores and electronics retailers to follow.
Chiikawa (Nanka Chiisakute Kawaii Yatsu) Designs for the Sma-Hie Premium Cooling Sheet
The Sma-Hie Premium is a heat-storage cooling sheet that adheres to the back of a smartphone. Microcapsules inside the sheet liquefy to absorb heat, helping to prevent battery deterioration, slower charging speeds, and sudden freezes during summer use. Once the absorbed heat is released into the air and the microcapsules solidify again, the sheet is ready to use once more, allowing for semi-permanent reuse.
The sheet uses re-peelable silicone gel, so it can be repositioned multiple times. At approximately 0.9mm thick, it is compatible with most smartphone cases.
The new designs feature summer-themed motifs and everyday scenes from the Chiikawa (Nanka Chiisakute Kawaii Yatsu) characters' lives. The illustrations are designed to look attractive even when used inside a clear smartphone case.
Product Information
- Product Name: Chiikawa (Nanka Chiisakute Kawaii Yatsu) [Sma-Hie Premium] Peel-and-Stick Smartphone Cooling Sheet
- Price: 2,000 yen (tax included: 2,200 yen)
- Designs: Chiruchiru, Watermelon, Sauna, Fruit Punch
- Release Date: June 2, 2026 (Tuesday)
- Where to Buy: Hamee official online store (https://www.strapya.com/products/111-1889), Chiikawa Market, Chiikawarand locations nationwide, and other Hamee retail and online partner stores
Product Features
- Designs that look great even inside a clear smartphone case
- Absorbs heat to help protect the battery from thermal deterioration
- Can be repositioned multiple times
- Approximately 0.9mm thick, compatible with most cases
- Suitable for watching videos, gaming, and navigation use while driving
- Compatible with Qi wireless charging when applied
*Qi wireless charging compatibility may vary depending on the device model, case, charger combination, and placement of the sheet.
About Chiikawa (Nanka Chiisakute Kawaii Yatsu)
Chiikawa (Nanka Chiisakute Kawaii Yatsu) is a manga series created by illustrator Nagano, which originated on X (formerly Twitter). It follows Chiikawa and a cast of distinctive characters — including Hachiware and Usagi — through fun, bittersweet, and occasionally intense everyday stories.
The series has expanded into merchandise, collaboration cafes, and corporate collaborations. The manga has been published up to Volume 8 by Kodansha under the title "Chiikawa: Nanka Chiisakute Kawaii Yatsu." The TV anime has been airing on Mezamashi TV (Fuji TV network) since April 2022, and the theatrical film "Movie Chiikawa: Secret of the Mermaid Island" is set to open on July 24, 2026.
For more information, visit the Chiikawa official info site: https://chiikawa-info.jp/
