I just noticed Frost is wearing an Under Armour cap. Are there more branded (clothing) items in the game? : r/Rainbow6

Learn More About Under Armour, Merchology, armour branded

Fallout New Vegas U.L.T.I.M.A.T.E. - Modular Modding Guide

I never knew frost had an under armor beanie : r/Rainbow6

The lowlights of The Game Awards. - You Found a Secret Area!

Frost is wearing an under armour hat?! : r/Rainbow6

360+Gamer+Magazine+ +issue+130, PDF, Xbox 360

Frost, Rainbow Six Wiki

Retro gamer №80 by Michel França - Issuu

Ready Player One: Complete Easter Egg and Reference Guide