—【Special Color】 Pink makes your package more attractive to customers, making your package more mysterious. —【Super viscous】 Hot melt adhesive strip, strong viscosity, once bonded, can only be destructive to open it, improve your package security. —【Durable Protection】 Made with six layers membrane, can be starched 3 times longer than normal, keeping your product in good condition. —【Waterproof Bags】 Waterproof keeps the Gifts as good as new even if they get left out cold in the rain. —【Save Your Time And Shipping Cost】 These poly mailer bags are 2 mils thick for shipping soft goods, and they are light enough to save you some money on weight for shipping.