Prevue Pet Products Playfuls Physical & Mental Pouch Small Grab Bag 62387 is ideal for satisfying a birds plucking preening and nesting instincts. This toy also keeps birds physically & mentally engaged as they decontruct this refillable toy. Birds will play with grab bag sticks and pluck at the fibers for nest-building. Each toy attaches easily to any bird cage with twist ties integrated into the backsides. Bag measures 2 1/2 Long 2 Wide and 4 High.