ykk zippers Do you need a two-way zipper on your hiking jacket? What is the point of two-way zippers, and should you be looking for one on your next hiking jacket? Why does all your outdoor gear have YKK zippers? What is a YKK zipper? And why are they on every piece of gear you own? We find out more about this stalwart of the outdoor industry Advnture NewsletterAll the latest inspiration, tips and guides to help you plan your next Advnture!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1The 9 weirdest events at the 2024 Olympics2Asics launch 3D-printed insoles personalized for individual foot shapes at new French studio3Watch crazy base jumper go on an Aladdin-style magic carpet ride4The Hoka Tecton X 3 is almost here and with these upgrades it looks built for speed and distance on the toughest trails5Cyclist "swung as hard as he could" and punched grizzly bear in the face – it worked