Nathan Marathon Pak 3.0 Color:Vapor Grey-Sailor Blue Altra evolved the rubber midsole

Altra evolved the rubber midsole for a lighter weight and more flexibility so you can feel connected to the road

is used to provide gentle compression and a plastic loop is utilized to make it easier to adjust

Carry your smartphone and other essentials in the large zippered pocket

it doesn't affect taste and it won't stain

soft mesh fabric allows airflow and a form that fits your head

Nathan Marathon Pak 3.0 Color:Vapor Grey-Sailor Blue Altra evolved the rubber midsoleWith a versatile design that can be worn over the shoulder, the light and versatile Nathan Marathon Pak 3. 0 Belt combines storage and comfort to keep you fueled on the run. Carry your smartphone and other essentials in the large zippered pocket. Details: Contoured, minimalist waist pack can also be worn crossbody. Soft and durable materials dry quickly with interior breathable air mesh. Chafe free seams Race ready features include elastic gel loops,