How to Use the WYN Signature Flip-Lock Zipper (and Why It’s a Game-Changer)

At WYN, we’re all about performance, innovation, and the details that make your training and racing smoother. One of those details? Our signature full-front YKK VIZLON® flip-lock zipper, featured on both our tri suits and cycling jerseys.

We’ve received a few questions about how it works—so here’s everything you need to know about this high-performance zipper and how to use it.

What is a Flip-Lock Zipper? 

Unlike traditional zippers, the YKK VIZLON® flip-lock zipper is designed to stay in place when you want it to, and open up when you need it to. The locking mechanism is activated by flipping the zipper pull down to lock, and up to unlock.

It’s a small motion with a big impact—especially when seconds count or airflow matters.

Why We Use It: Benefits by Sport

For Triathletes 🏊🚴🏃

Transitions are crucial. Whether you’re coming out of the swim or getting ready for the run, you need gear that responds quickly and holds its position.
The flip-lock zipper makes it easy to fully open your tri suit for faster transitions, then lock it into place so it stays secure mid-race—no bouncing, no sliding.

For Cyclists 🚴

Sometimes you want airflow on the climb—but not a flapping jersey on the descent. The flip-lock lets you partially unzip your jersey, lock it in place, and ride with the ventilation you need without it opening any further.

How to Use the Flip-Lock Zipper

• To Unlock the Zipper: ⬆️
  Flip the zipper pull up (usually perpendicular to the garment). Once it’s unlocked, you can unzip it easily in one smooth motion.

• To Zip Up: 🆙
  With the zipper in the unlocked (up) position, pull it up like a normal zipper.

• To Lock the Zipper: ⬇️
  Once zipped to your preferred position (whether fully or halfway), flip the zipper pull down so it lies flat against your kit. This locks the zipper in place and prevents it from moving.

• To Adjust or Reopen: 
  Flip the pull back up to unlock it, and adjust as needed.

Pro Tips 🏆

• If the zipper feels stuck, double check that the pull is in the unlocked (up) position before tugging.

• For partially-open styles (popular with cyclists), experiment with locking at mid-chest to find your sweet spot for airflow + stability. 

• Don’t force the zipper while locked—it’s designed to resist movement when engaged.

In Short: Why It Matters

Whether you're flying through transitions or grinding up a climb, the YKK flip-lock zipper is a performance feature that puts you in control. It’s reliable, adjustable, and built to work with you—not against you.

Have questions about your gear? Our team is always here to help.