Ironwear ANSI Polyester Mesh SAFETY Vest

This best is relatively hot to wear even when walking at a moderate pace at 80° outdoors, and 30% humidity. I'm comparing this to another vest I have that's getting tattered, has no pockets, and feels to be made of a slightly thinner material. From reading the reviews I thought this would be the most comfortable, having the most surface area with only one layer of mesh. I'm still wearing the old one I bought about 2006, that is tattered.