Aspects of the disclosure relate to a package, an article carrier for packaging a plurality of articles and to a blank for forming the article carrier. The article carrier may package at least one article having a recess. The article carrier comprises a plurality of panels for forming a tubular structure for surrounding at least one article. The article carrier comprises an article retention device for engaging a recess of one of said at least one article. The article retention device may inhibit dislodgement of the article from at least one of opposite open ends of the tubular structure in a setup carrier. The tubular structure defines a tubular axis. The article retention device comprises a flap hingedly connected to a first one of the plurality of panels along a first fold line. The first fold line extends at an acute angle with respect to the tubular axis. The acute angle may be no more than 50 degrees.