This pattern is only available for a kit from Hobbyra Hobbyre or Tezukuritown.

This bag is just introduced in Keito Dama No.150.
Its pattern is not available in the magazine, but you can purchase the kit at Hobbyra Hobbyre. Price is ¥6510

The kit includes the pattern, 1 skein of yarn, 12 types of beads and a straw bag.