Just got this email and I think the deal is supposed to be on at 10AM on Saturday — however the price is already on their site. "Super Saturday Deal 24 hour only" with quite a few jackets for $41, similar to this deal from a month ago. Limited stock though and some sizes have no stock at all.
Postage is free for orders over $150. HOWEVER $40 postage for orders under $150 (which you can almost buy another jacket) so don't bother if you are only looking at getting one or two.
$20 off 100+ spend when you sign up to their newsletter too :)