Agreed they will only be legal if they are measured, but given that it is more than 16 months since the last dark blue Infusion sails were sold (they were sold in the UK and are they are the only set here-they are measured!) and that even at club level the NOR requires a boat to be measured it is unlikely that any of these few dark blue Infusion sails will be unmeasured. Please let us know if you are aware of any that are not measured.