Ultraflask+ Filter Cap Dapper This pair of Merino wool

This pair of Merino wool socks helps keep things warm

The foam brim provides structure and stability

mesh pockets streamline organization

Great for golfing

Ultraflask+ Filter Cap Dapper This pair of Merino woolRun fast, filter faster. The UltraFlask+ Filter Cap threads seamless onto all of HydraPak's 42mm running flasks and handhelds for a lightweight, straightforward filtration solution. Featuring a traditional bite valve and cap design, runners can drink freshly filtered water directly through the high flow Blaster valve.*Effectively removes common waterborne bacteria, such as E. coli (99. 999%) and parasitic cysts (99. 9999%) per HSF 42.