A container having a top end with an opening therein and a bottom end opposite the top end, and at least first and second sides (106,108) between the top and bottom ends of the container, the container comprising: a first layer of sheet material forming the first side of the container and at least a second and third layer (102,104) of sheet material forming the second side of the container, a pair of closure strips (302,304) extending along the opening of the container, each of the closure strips having at least one of a male and a female linear interlocking strip (306,308), a first of the pair of closure strips comprising: an extension above and an extension below the respective linear interlocking strip, and a second of the pair of closure strips comprising an extension below the respective linear interlocking strip, the linear interlocking strips (306,308) configured to be released from each other by pulling the extensions (312,314) below the linear interlocking strips apart, wherein a first set of the linear interlocking strips (306,308) comprise a male interlocking strip having a barb extending therefrom and a female interlocking strip having a hook shaped leg, the barb and hook shaped leg operable to engage each other in a sealed state and releasable by rotating the female interlocking strip relative to the male interlocking strip to disengage the barb from the hook shaped leg, wherein the female strip comprises a straight leg and the hook shaped leg is located upward from the straight leg, characterised in that the first layer of sheet material is attached to the second of the pair of closure strip at the extension below the respective linear interlocking strip therewith forming a first upward extending flap, the second layer of sheet material is attached to the first of the pair of closure strip at the extension below the respective linear interlocking strip therewith forming a second upward extending flap, and the third layer of sheet material is attached to the first of the pair of closure strips at the extension above the respective linear interlocking strip therewith forming a third upward extending flap, the container therewith capable of being opened by pulling the first and second flaps apart (118,122), but not by pulling the first and third flaps (118,120). a first layer of sheet material forming the first side of the container and at least a second and third layer (102,104) of sheet material forming the second side of the container, a pair of closure strips (302,304) extending along the opening of the container, each of the closure strips having at least one of a male and a female linear interlocking strip (306,308), a first of the pair of closure strips comprising: an extension above and an extension below the respective linear interlocking strip, and a second of the pair of closure strips comprising an extension below the respective linear interlocking strip, an extension above and an extension below the respective linear interlocking strip, and a second of the pair of closure strips comprising an extension below the respective linear interlocking strip, the linear interlocking strips (306,308) configured to be released from each other by pulling the extensions (312,314) below the linear interlocking strips apart, wherein a first set of the linear interlocking strips (306,308) comprise a male interlocking strip having a barb extending therefrom and a female interlocking strip having a hook shaped leg, the barb and hook shaped leg operable to engage each other in a sealed state and releasable by rotating the female interlocking strip relative to the male interlocking strip to disengage the barb from the hook shaped leg, wherein the female strip comprises a straight leg and the hook shaped leg is located upward from the straight leg,