Silicon Valley Men's Original Piper Logo Short Sleeve T-Shirt 60% Cotton, 40% Polyester Made in the USA and Imported Machine Wash Whether you're into rocking a Hooli, Pied Piper, or Aviato shirt, hold on to your hats and your Weissman score, because Silicon Valley tees are about to take over your closet. Short sleeve t-shirt, crew tee, slim fit, pre shrunk, made in USA, machine wash, fashion tee, silicon valley, primetime tv, bay area, entrepreneur, small business, apps, application, nerd, smart 60 percent cotton, 40 percent polyester