Milwaukee Yellow S/M Class 2 High Visibility Mesh One Pocket Safety Vest. The MILWAUKEE CSA Type R Class 2 High Visibility Mesh One Pocket Safety Vest provides a lightweight wear solution. This high visibility safety vest features lightweight, breathable mesh, helping to stay cool and comfortable in hot working conditions. The Mesh One Pocket Safety Vest features 1 external chest pocket, 1 mic tab, and a secure zipper closure. . Safety vests is customizable with the ability to add a logo in 2 different locations. Class 2 high visibility reflective vests are recommended when working in environments with traffic traveling under 50 MPH or around heavy machinery. This includes construction, road construction, traffic direction, utility crews, and survey crews.