McNett Zip Care 

Zip Care™ Liquid Zipper Cleaner & Lubricant Zip Care is the ultimate zipper care for plastic, nylon or metal zippers.

Unique push-pull brush top enables the cleaner to be delivered between the teeth and physically removes harmful dirt, sand, and salt deposits that can jam the zipper.

Safe to use on a multitude of zips - tents, sleeping bags, drysuits, wetsuits, gear bags.