It is a clothing or accessory for protection against ionizing radiation comprising a body of flexible material threadable by an operator and reinforcing protection means comprising of one or more layers or plates protecting against ionizing radiation integrated within said body. The garment comprises at least two parts, each provided with a magnetic element for setting, adjusting, arranging or closing the garment or accessory when one of the parts is activated by the operator to cooperate with the other part. Each magnetic element is composed of at least two groups each comprising at least one positive magnet and at least one negative magnet, the groups of the same magnetic element being set directly or indirectly on the same support and/or between them and being able to co-operate with the groups of opposing polarities of the other magnetic element.