A neck-protective member for preventing chafe encountered when wearing a wetsuit is provided that fits snugly around the wearer's neck, with its lower edge under the edge of the neck opening in the wetsuit. The edge of the neck opening in the wetsuit bears against the protective member rather than the skin of the wearer's neck, preventing painful chafing that can be experienced around a wearer's neck upon prolonged wetsuit use.In a particularly preferred embodiment of the invention, the neck-protective member of the invention comprises a generally conical neck portion, which fits around the wearer's neck, and a skirt portion, which fits over the wearer's shoulders, under the wetsuit. The neck portion may be formed of a single band-like member cut from a sheet of flat material, preferably “smoothskin” neoprene rubber material, oriented such that the smooth surface of the “smoothskin” neoprene rubber material is to the inside and contacts the wearer's neck.Similar members can also be provided for prevention of chafe between the ends of sleeves in the garment and the arms of the wearer.