Sep. 14, 2026
PU vs TPU Waterproof Zippers: Which Coating Fits Your Outdoor Line?Waterproof zippers used to be a niche item for professional rain gear. Today they appear on everything from commuter softshells to ski suits to school backpacks - and the most common question our outdoor-apparel customers ask is not "whether" to use a coated zipper, but "which coating": PU or TPU. Here is how we help buyers decide.
