The arrow shafts are Ash and Poplar for use with a heavier bow than the originals would have been shot from - the original arrow shafts were likely to have been pine and birch.
Each arrow is fletched with greenish brown fletchings to represent the feathers of the Gulosus aristotelis, or European shag. These would have been common along England's coasts during the Anglo-Scandinavian period.
The fletchings are bound with fine flax into birch tar glue, and the nocks are typical of most arrows until the 14th Century at least.
The two arrowhead types are from the Coppergate archaeological finds - a square section bodkin with a socket and a tanged leaf head which is fixed in place with tar, and bound with tarred flax.