A stuck zipper on a swim wetsuit usually means salt, sand, or a pinched neoprene flap is in the track. It rarely means the zipper is broken. The fix is a sequence of rinsing, straightening, and working the slider backward before you pull hard. For blueseventy suits, the same rule applies: slow, straight, low-force first.
Why the zipper sticks
A swim wetsuit zipper sticks for a small set of reasons. Salt water dries into crystals inside the zipper teeth after a beach swim. Fine sand works into the slider and grinds against the teeth. Chlorine and lake water leave a film that makes the pull stiff. A fold of neoprene or the zipper flap can get caught under the slider when the suit is put on in a hurry. Sometimes the pull cord or leash has wrapped around the zipper head and tied the slider in place. If the suit is not pulled up fully at the hips and torso before you close it, the zipper track sits under sideways tension, which makes the slider bind even when the teeth are clean.
Free it without hurting the suit
- Check the pull cord or leash first. If it has wrapped around the slider, untangle it before you pull anything.
- Rinse the zipper area with fresh water. At the beach, use a water bottle if there is no shower. You want to dissolve salt and float out sand before you move the slider.
- Lay the suit flat or have a helper hold the zipper tape above and below the slider. Pulling on the neoprene alone will stretch the suit and bunch the zipper track, so keep the tape straight with both hands close to the slider.
- Move the slider backward first. A few millimeters back toward the open position releases grit, fabric, or a tiny fold pinched in the teeth.
- Look into the open zipper track. Pick out visible sand or fibers with your fingers or a soft toothbrush. Avoid metal tools; a knife or nail file can nick the zipper teeth.
- Work the slider forward a short distance, then back again. Repeat in small movements, not one long yank.
- Do not grip the slider with pliers. That is how zipper tracks tear.
What to put on the zipper
Once the teeth are clean, a small amount of zipper lubricant made for neoprene works well. A solid zipper wax or paraffin rubbed lightly on the open teeth also works. Apply it to the teeth, not the neoprene. Work the slider up and down a few times. Avoid oil-based lubricants, cooking oil, petroleum jelly, and spray lubricants. They collect sand and grit, which will turn a clean zipper sticky again. Do not use soap or detergent as a lube; they can leave residue in the zipper head.
After every swim
Open the zipper and rinse both sides of the track with fresh water after salt, chlorine, or lake swims. Then rinse the whole suit. Salt, chlorine, and lake water all leave residue that makes zippers stiff. Hang the suit to dry away from direct sun. After it is dry, close the zipper before you store the suit flat or draped over a wide hanger. Do not fold the suit so a crease lands across the zipper. If you race or train in salt water often, rinse the zipper at the transition area or car before the salt dries.
When to stop pulling
A zipper that will not move after a rinse and a careful backward-and-forward movement needs a different approach. Stop while the teeth and tape are intact. Forcing a wetsuit zipper can tear the neoprene tape, break the slider, separate teeth, or pull the zipper track away from the neoprene, and blueseventy's warranty does not cover zipper damage from force. If a clean, undamaged zipper on a blueseventy suit still binds, contact us@blueseventy.com with a photo of the zipper head and teeth before you keep working on it.
If it sticks every time, check fit
If the zipper jams only when you close the suit for a swim, check your donning sequence. The suit should be pulled up fully at the hips and waist before you reach for the zipper. A suit that is too small across the shoulders will put the zipper under sideways tension and make the slider bind. Blueseventy suits should feel snug on dry land and more comfortable in the water. The fit guide and size chart cover height, weight, and build. If you are between sizes, try the next size before you assume the zipper is faulty.
Happy swimming.
