(24)The power to adopt acts in accordance with Article 290 of the Treaty on the Functioning of the European Union should be delegated to the Commission in respect of the adoption of technical criteria and procedural rules for the authorisation of higher tolerances, the amendment of Annexes II, IV, V, VI, VII, VIII and IX in order to adapt them to technical progress and the amendment of Annex I in order to include new textile fibre names in the list set out in that Annex. It is of particular importance that the Commission carry out appropriate consultations during its preparatory work, including at expert level. The Commission, when preparing and drawing up delegated acts, should ensure a simultaneous, timely and appropriate transmission of relevant documents to the European Parliament and to the Council.