After many hours of research and development on durable, lightweight fabrics and construction techniques we have created a hat that weighs about the same as a 60-watt lightbulb (only 1.35oz/38g) and packs down to the size of a deck of cards. 
 
The ultra lightweight Fact_ Solana hat is ideal for runners, triathletes, walkers, crossfitters, hikers, travelers and everyone else who values the lightest, most packable hat in the world! Also, perfect for IRONMAN athletes!
 
Not only is the Fact_ Solana lightweight and compact, it’s also: 
breathable with side panel perforations 
water repellant
cooling fabric technology
UPF Protection
adjustable strap with elastic stretch for a perfect fit
reflective strap for added safety during those dawn, dusk and dark activities
.....not to mention it's also fashion functional with multiple ways to wear.