These are popular Duskin sponges. Durable and long-lasting ☆ The slightly longer size allows you to clean even the bottom of cups. 3-color sponge monotone x 1 New and unused. This is a new soft type of sponge, a popular Duskin product. The conventional nylon non-woven fabric part has been replaced with a compressed urethane layer, making it softer than the conventional ones. Durable and long-lasting ☆ The slightly longer size allows you to clean even the bottom of cups. 3-color sponge set soft type x 1 New and unused.