They are supposed to both have same ingredients.
The only diff being 27grms in the Fasts
Do you honestly Believe that superfast and Sovereign have the same components :phew:
Here link http://www.ebay.co.uk/itm/Napier-Razorback-Shotgun-carrier-gun-slip-bag-8732-/130789767124?pt=UK_SportingGoods_Hunting_ShootingSports_ET&var=&hash=item1e73ad77d4#ht_1001wt_958
5 year WARRANTY