A package adapted for accommodating products, comprising: an inner tray comprising at least one recess formed at an upper side of the inner tray and being adapted for accommodating a product, the upper side of the inner tray having a first portion and a second portion adjoining the first portion, a cover adapted for covering at least the first portion, wherein the cover is movable between an open state of the package in which the at least one recess is accessible to a user and a closed state of the package in which the at least one recess is inaccessible to a user, a removable sleeve adapted to be reversibly fixed on the inner tray and to be removed from the inner tray, wherein the sleeve is movable between a coupled state of the package in which the cover is fixed by the sleeve to the inner tray and an uncoupled state of the package in which the cover can move in relation to the inner tray, characterized in that at least one pair of a cavity (181, 182) and a protrusion (161, 162), wherein one among the at least one cavity (181, 182) and the at least one protrusion (161, 162) is formed in the second portion of the inner tray and the other one among the at least one cavity (181, 182) and the at least one protrusion (161, 162) is formed on an inner surface of the removable sleeve, wherein the cavity (181, 182) interlocks with the protrusion (161, 162) in the coupled state of the package, such that the at least one protrusion (161, 162) and cavity (181, 182) are invisible from an outer perspective, wherein the at least one pair further comprises an unlocking element (171, 172, 173) adapted such that, in the coupled state of the package, the cavity (181, 182) unlocks from the protrusion (161, 162) when a pressure is applied to the unlocking element (171, 172, 173). an inner tray comprising at least one recess formed at an upper side of the inner tray and being adapted for accommodating a product, the upper side of the inner tray having a first portion and a second portion adjoining the first portion, a cover adapted for covering at least the first portion, wherein the cover is movable between an open state of the package in which the at least one recess is accessible to a user and a closed state of the package in which the at least one recess is inaccessible to a user, a removable sleeve adapted to be reversibly fixed on the inner tray and to be removed from the inner tray, wherein the sleeve is movable between a coupled state of the package in which the cover is fixed by the sleeve to the inner tray and an uncoupled state of the package in which the cover can move in relation to the inner tray, characterized in that at least one pair of a cavity (181, 182) and a protrusion (161, 162), wherein one among the at least one cavity (181, 182) and the at least one protrusion (161, 162) is formed in the second portion of the inner tray and the other one among the at least one cavity (181, 182) and the at least one protrusion (161, 162) is formed on an inner surface of the removable sleeve, wherein the cavity (181, 182) interlocks with the protrusion (161, 162) in the coupled state of the package, such that the at least one protrusion (161, 162) and cavity (181, 182) are invisible from an outer perspective, wherein the at least one pair further comprises an unlocking element (171, 172, 173) adapted such that, in the coupled state of the package, the cavity (181, 182) unlocks from the protrusion (161, 162) when a pressure is applied to the unlocking element (171, 172, 173).