Keep your head cool and dry with a built-in HeatGear sweatband found in the Under Armour Men's Blitzing II Stretch Fit Cap! Its stretch construction provides a comfortable fit for any activity, so you can worry less about your hat and more about your day. The Blitzing II Stretch Fit is structured to maintain its original shape, along with a slightly higher crown, to last years of use. Polyester/Elastane. Imported.