The mark consists of a three-dimensional trade dress for a weight vest with a detachable zip pocket on one side. The claimed feature is represented by solid lines, for which the following primary features are claimed: (i) the shape of the outer contour of the weight vest; (ii) the shape of the detachable zip pocket, for which it is detachably attached to the upper part of one shoulder strap. The remaining design elements including the adjustable elastic straps, reflective stripes, the inner sewing threads serving as a weight distribution and fixing segment for the stuffed iron sand, and the decorative combined pattern above the detachable zip pocket including a triangle-shaped feature plus a crossing star feature, all shown in dashed lines, are not claimed to be features of the mark but serve only to show the placement of the mark. The stippling (dots) on the drawing is not a feature of the Mark but represents the shading where trade dress protection is claimed.