Andrew wrote:

I find it difficult to believe that this would provide
66 minutes of protection.

https://www.richersounds.com/clearance-bargains/in-store/39/hoody-hoody4.html?instore


They seemed to manage 90 minutes of testing

https://www.mastdigital.co.uk/media/productattach//h/o/hoody_bs_en_1363_1.pdf