Like John Muir Safe guarding Yosemite, The North Face El Cap Peak 1/4 Zip for men helps save the planet with its 100 recycled polyester design. By recycling this Polartec Eco engineered midweight saves 66 lbs in CO emissions and saves 17 gallon of gas, which is a Great thing don't you think. This piqu knit with UPF 30 sun Safe guardion highlights an underarm gusset that gives excellent mobility, while its raglan sleeve that moves seams out of the way give a Great backpackfriendly fit. A Safe guardion treatment inhibits growth of odorcausing bacteria that is community friendly upon your urban re-entry.