Material: Plastic construction is wear- and corrosion- for durability. Quantity: 30 pieces included, offering enough replacements for multiple items. Size Options: Available in S, M, L sizes to accommodate various zipper types. Wide Application: Fits most zippers on backpacks, luggage, handbags, wallets, coats, boots, suitcases, jackets, pants, jeans, tents, and more. Easy Repair: Quickly restores function to broken zippers without sewing or replacing the entire zipper, saving time.