Learning Resources Magnetic Storage Pockets (Set of 4). Ideal for organising your classroom, these useful storage pockets attach to any magnetic surface. These classroom essentials have been designed to safely store up to 350g, these handy pockets provide a great solution to storing all your whiteboard accessories. Pockets feature a strong magnetic backing and Velcro fastening to keep contents secure. Clear plastic window on the front of each pocket allows for easy identification of whats inside. Set includes 4 different coloured pockets (green, red, purple and blue). Pockets measure 23cm L x 14cm H.