It's made of the same lightweight nylon fabric, but instead of zipping up and down, you pull it over your head and button the neck area (or not). This style also has a funnel collar with a hood to keep the cold out and three pockets in the front to store small valuables like your phone, keys and cards, which will certainly come in handy. Packable: This style packs down small into itself for easy carrying, storage and travel. Water-Resistant. PrimaLoft® ThermoPlume®: Filled with a vegan-friendly down alternative, designed with lightweight warmth, loft, softness and compressibility. Warmer: Designed with heavier fills, quilting, and puffed detailing to keep you cozy in the colder months.