Great sale price at SawSuppliers. Replacing a 25 yr old ENHA Rockman Forestry helmet & noticed Oregon is very very similar. Side by side are remarkably the same. Components might exchange later (don't know). Pleased that 564101 is a 6-pt suspension harness (some sites don't say or erroneously state 4-pt, mine is a 6-pt). Helmet shell seems softer & more flexible than Rockman although maybe 25 yr old plastic & no significant of Oregon. Expect to be happy customer as experience with ENHA Rockman & seemingly shared features of Oregon helmet.
Can't attest whether same sources. Certainly look about identical. Rated 4-stars only as not worn yet. Should be a 5 performer.