Grayl Ultra Press One-Way Drink Mix Valve Silva fish species and the incredibly

fish species and the incredibly detailed land and waterscape you've come to expect from The Adventure Map™

It’s dyed with a low-impact process that reduces the use of dyestuffs

The T-700 carbon shaft is strong

Did your dog chew the valve off your brand-new Therm-a-Rest® mattress

Grayl Ultra Press One-Way Drink Mix Valve Silva fish species and the incrediblyDescription Features Specifications A feature no other drink thru filter bottle can deliver, the One Way Valve for the UltraPress allows electrolytes and sport drink mixes to be added to clean purified water without compromising the integrity of the filter. Note: an UltraPress One Way Valve is now pre installed in every UltraPress. Enjoy a drink mix no matter where your adventure takes you. Replace electrolytes lost in sweat and hydrate quickly. Four