They can be applied separately. These black plastic mesh bins efficiently use available space, making them ideal for small or large areas. Warm to share: These storage baskets bins can be regarded as useful gifts for your friends who like to clean regardless of age and gender, proper for sending to storage lovers, reader, teachers, office workers and so on, which will be a practical tool for them. Specifications: Material: plastic Color: black Size: about 34.5 x 26 x 8.5 cm/ 13.5 x 10 x 3 inches Package includes: 16 x Black baskets Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays