Majestic Athletic Spandex

Chicago Cubs Therma Base Premier Jacket by Majestic Athletic

$119.95
at CubWorld.com
The NEW on field jackets for all teams in 2008 with playoff teams debuting them in the 2007 postseason! Therma Base technology is windproof & waterpro...

Oakland Athletics Authentic Therma Base Premier Jacket

$119.99
at Amazon
Therma-Base technology makes it wind and water proof. 92% polyester/8% spandex blend for maximum durability, four way stretch and superior comfort. Of...