The Sherwood Double Swing Arm attaches to the Sherwood Deck (TP811), Swing Legset (TP805) or Sherwood Tower (TP815) and can hold any 2 duo rides or single seater swings from TP's range. The deck itself should not be used by children under the age of 3, although some of the compatible swing seats are suitable from age 1. Made from pressure treated pine with a 10 year guarantee against wood rot and galvanised steel with a lifetime guarantee against rust causing failure. Note:In the interests of safety, we strongly advise adult supervision at all times during outdoor play.