Size: Approx. 11cm x 6cm x 3.5cm
Shape: Oval, resembling a bento box
Production location: Japan (Kainan City, Wakayama Prefecture)

Created through a collaboration between Kainan City, Wakayama Prefecture-based household goods manufacturer "aisen" and Kishu lacquerware maker "Yamaga Shikkiten," this sponge is designed exclusively for lacquerware and wood products.
The ultra-fine fiber brush using aisen's proprietary "Treppica" technology targets dirt at a level of 0.045mm—finer than a human hair. It penetrates invisible grooves and gaps to thoroughly scrub away debris that conventional sponges and brushes often leave behind, making it easy to keep your items looking clean and preventing dullness.
The shape is a gentle oval inspired by "magewappa" (bentwood). It is designed to be gentle on lacquered items like bowls and wooden magewappa bento boxes, allowing you to wash every corner with ease. Because these are dishes you use every day, treat them to the "specialized" care they deserve.