Hat Attack Key Beanie in Grey. Hat Attack Key Beanie in Grey. 64% acrylic 26% polyester 7% wool 3% elastane. Dry clean only. Lightweight ribbed knit fabric. HATR-WA273. BAA114RE. Hat Attack became official in 1981 and has been making waves in the fashion world ever since. The high-design affordable accessories line features everything from hats to mittens scarves to clutches. A celebrity favorite, Hat Attack pieces are worn by Kristin Cavallari and featured in major fashion magazines.