The speed-thirsty Brooks Vibe running short offers a stylish, retro look along with cutting-edge performance. A built-in liner moves moisture so you stay dry and comfortable, and a discreet, barely visible zippered back pocket conveniently and securely holds a key and credit card. Micro-Poly™ 100% supple microfiber polyester shell with a Silc™ 100% moisture transfer polyester crepe liner. 3" inseam. Imported.