Hama Beads Ironing Paper Hama beads with a diameter of 5mm are most popular within the Hama range, and are perfect for all age groups We recommend from 5 years, as children at this age will have control of their own motor skills Children and adults can have great fun with tiny plastic beads, whether they string them, press them or iron them They are completely safe should they be swallowed, and through nature of the raw materials no harm will come to the child.