Perfect Fit Cock Armour Clear. The Cock Armour works similar to prolong rings. Cock Armour is a new concept in cock luxury; it is a product that defies categorization. It is not a traditional cock ring, but incorporates many original features to make the product become an integrated part of your anatomy. It was designed by Perfect Fit’s Steve Callow to fit like a cod piece and push your entire package out completely from your body.