Broken zippers are particularly problematic while traveling. Whether on a garment, a piece of luggage, a tent, or some other vital item, a zipper that can't do its job can make whatever it's zippering useless. Repair shops or do-it-yourself zipper replacement are an iffy option on the go. Unless you've got a little miracle of a solution called the FixnZip. The device is a replacement zipper slider with an integrated thumbscrew that can be loosened to enclose the teeth of both sides of a zipper anywhere along the track, then tightened to bring those teeth together again for zipping. The device works with tooth and coil, metal, or plastic zippers, and requires no other tools.

The FixnZip, which includes both a ring and clip-on pull tab, comes in a shiny or dark nickel color, in a choice of three sizes (the manufacturer's size guide is a big help). If a section of teeth is really mangled, you may have to block off that section (sewing or taping it sealed, for example), and make do with a shorter, but fully operational, zipper. The surgery is actually easier to perform than to explain.

FixnZip in small, medium, or large is $9.99; 3-pack with one of each size is $24.99; at www.fixnzip.com.