New Old Stock 3M? DBI-SALA Delta? Hi-Vis Reflective Orange Workvest Harness. Date Of Manufacture 2019 These unique work vest and harness combinations provide an excellent option for those requiring reflective workwear with their fall protection. 3M's work vest is constructed from lightweight, breathable, yet extremely durable polyester with a heavy-duty smooth operating zipper. It is ideal for those working at heights in or around construction, utility, or traffic applications. Most orders shipped next business day with UPS or Purolator having 5 to 10 business day shipping and tracking.