New generation of ultra-light gear.  100% waterproof, durable and weighs next to nothing at  0.6 oz.  
Deneema neck strap is strong and float if dropped in a water. 

Technical specifications: 
Size:   5.5" *7.9"  
Weight:  0.6 oz ( 17 g) 
Dyneema Composite Fabric 0.8 oz/yd2
Dyneema 2 mm cord
Watertight zipper