These are the polystyrene beads found inside cushions and pillows. Each bead is quite small (less than 1mm). Only a few beads were used for an experiment, so the contents are almost as they were when purchased. Approximately 30cm tall Approximately 20cm wide Approximately 8cm high I don't have a scale, so I don't know how much it weighs. Please feel free to contact me if you have any questions.