The Prism PT Half Zip Polartec® Fleece is a great all-rounder for walks or hikes. When sunny days take a sudden, cold turn, it's time for our Prism PT Half Zip Polartec® Fleece. With its outstanding combination of lightweight and high warmth, this fleece made from super-soft Polartec® Classic fabric is the versatile insulation layer that should not be missing from any adventure. No matter how changeable the weather may be, this fleece always fits.