how do you wash these? And by hand wash do you mean woolite?

The easiest way to wash these is in your washing machine on cold delicate and allow to air dry. If you hand wash, do so in your sink with some dish detergent, rinse out thoroughly, and again allow to air dry.

Will the 6” x 7” blue Koala be offered again soon? Loved the color vs. black color

Hi. We used to sell our Koala Kloth in turquoise, but when we changed factories to improve the quality of our cloths and have them come individually packaged in kraft paper pouches, we weren't able to continue to source the turquoise material to meet our demand, so we switched to black. Black is actually an improvement over turquoise as it shows dirt and dust particles easier, which tell you it's time to clean your cloth.

Not sure of the relevance of the question in regards to a lens cleaner. Can the questioner restate? (I'm interpreting GSM to refer to the weight of the fabric -- which is irrelevant for a 6x6 piece of cloth for cleaning lenses.)

コアラレンズクリーニングクロス | 日本製マイクロファイバー | メガネクリーニングクロス | 眼鏡レンズクリーナー | 眼鏡、カメラ、VR/ARヘッドセット、スクリーンクリーナー | ブラック&グリーン (2パック)

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