A dip-forming latex composition comprising a conjugated diene rubber latex and an organic peroxide, wherein the residual effective activity of organic peroxide defined as the ratio of organic peroxide retaining reactivity to the whole organic peroxide contained in the latex composition is 35% or higher. In addition, in this case, control data indicating the arrangement of the frequencies of pilot signals in each track on the magnetic tape is inverted at an interval of two frames in the NTSC system and of one frame in the PAL system and placed in the recording data. The classification engine may be configured to generate a classification based on, for example, the presence of closed caption data, the presence of copy protection data, current frame rate associated with the video content, or a native frame rate associated with the video content. The crafter’s purse has a pair of handles for carrying the crafter’s purse and an elastic band which encircles the peripheral wall at a position above the pocket openings to secure the items contained in the pockets. A through hole below the protrusion member is defined in the bottom wall for facilitating molding the protrusion member. In the reflecting type of zoom optical system, an image of an object is formed via the plurality of optical elements and zooming is performed by causing at least two optical elements from among the plurality of optical elements to vary their relative positions.