Which zipper suits a sleeping bag?
Sleeping bags take a size 5 or 8 two-way separating coil; a slider that catches the shell tears it, and a stiff tape makes the bag curl.
Questions on product selection, fit and functional trade-offs.
Sleeping bags take a size 5 or 8 two-way separating coil; a slider that catches the shell tears it, and a stiff tape makes the bag curl.
Quarter-zip running tees use a size 3 lightweight coil with a semi-auto lock slider; a size 5 metal zip distorts the knit neckline.
A raincoat needs a PU-coated waterproof reverse coil with sealed stops; ordinary coil wicks water along the tape and leaks at the chest.
Jeans take a size 4.5 brass metal zip; a nylon coil in a denim fly is the classic error, and wash shrinkage must be planned for.
A trench coat takes a size 5 two-way metal or vislon zip with a long pull; a single slider fights the wearer when seated.
Cycling jerseys take a size 3 closed-end coil with a locking slider; a non-locking pull creeps down while riding, which is the usual failure.
Ski jackets use a size 5 or 8 waterproof front zip with two-way sliders and size 3 pit zips; single-slider fronts and unflapped vents leak.
Climbing pants use a size 4.5 coil fly; metal teeth abrade rope and harness, and an over-long fly digs in under a harness.
Swimwear needs acetal teeth with a plastic slider; metal teeth and springs corrode in chlorine and leave rust stains on the fabric.
A wedding dress takes a size 3 invisible coil zip in matched tape; shade mismatch and a slider carrying the bodice strain are the pitfalls.
A wool coat needs a size 5 metal or vislon zip, two-way on long styles; a coil zip loads and splits under the weight of heavy wool.
Duvet covers use a size 3 or 4.5 coil zip with a plastic slider; untreated tape shrinks in hot laundry and puckers the seam.