WATERPROOF - Waterproof fabric provides an impenetrable moisture barrier for guaranteed dryness.BREATHABLE - Lightweight fabrics help regulate body temperature and keep you comfortable.The Millerton proves hiking jackets needn't be boring... this slim-fitting jacket brings a touch of city style to mountain trails. That doesn't mean technical features aren't important. The Millerton Jacket is a two-layer DryVent™ shell that is waterproof, windproof and breathable so a little rain - or even a full-blown downpour - won't stop play. You can keep trekking without needing to seek shelter. In fact, with an adjustable hood, hem and cuffs as well as an internal draft flap behind the water-resistant zip, this jacket is your shelter.