1. Waterproof Caps are protective covers made of water-resistant materials (e.g., TPU, silicone), designed to seal and shield the ends of components.
2. Water-repellent, dust-proof, tightly fits component ends (prevents falling off), and resistant to moisture-induced aging.
3. Zipper ends (to prevent water ingress), cord tips (hat cords, waist cords), and metal parts (to avoid rust from water).