"ANSI Class 2" is printed on half the vests sold in North America, and most crews couldn't say what it commits the garment to. Here is the standard in plain language, when a class is actually required, and vests that state their rating honestly.
In a hurry — the picks (affiliate links — as an Amazon Associate I earn from qualifying purchases; the classes explained below)
| Everyday Class 2 vest | JKSafety JK150 (15,000+ ratings) |
| Alternative fit | TICONN ANSI Class 2 |
| Gate box / visitors | Class 2 vests, 10-pack |
| Night / traffic (Class 3) | Pioneer sleeved Class 3 |
ANSI/ISEA 107 (current edition 2020) rates high-visibility garments by how much background material and retroreflective tape they carry, and where it sits on the body:
Where the requirement comes from: for work on federal-aid highway rights-of-way, federal rule (23 CFR Part 634, carried into the MUTCD) requires workers to wear high-visibility apparel meeting ANSI 107 Class 2 or 3. OSHA's construction rules require flaggers to wear warning garments (1926.201, red/orange, reflectorized at night), and hiring clients' site rules routinely specify Class 2 minimum for everyone on the ground. As always, the strictest applicable requirement — usually your hiring client's — is the one to provision against.
Fits: the everyday individual vest — one of the most-reviewed hi-vis vests on Amazon (15,000+ ratings).
Note: confirm the size/variant you pick states ANSI/ISEA 107 Class 2 on the tag.
Fits: a widely reviewed Class 2 alternative (6,500+ ratings) if the JK150 sizing doesn't suit your crew.
Fits: the gate box — visitor vests, new hires, and the one that left in a truck. Cheapest way to make "no vest, no entry" enforceable.
Fits: night work and traffic exposure — an actual Class 3 garment with sleeves and reflective tape where the standard requires it (1,100+ ratings).
Class 2 carries substantially more fluorescent background material and 360° reflective banding than Class 1, and is the working default for construction. Class 3 is the maximum-visibility rating — and the garment must include sleeves with reflective material, so a sleeveless vest cannot be Class 3 no matter how bright it is.
For work on federal-aid highway rights-of-way, the federal rule requires ANSI 107 Class 2 or 3 — Class 2 is the minimum. Night work, flagging, and high-speed traffic are where site rules and good judgment step up to Class 3.
When it needs to be Class 3. The class rating is about total visible and reflective area including the arms — which is why Class 3 garments are jackets or sleeved vests, not tank-style vests.