Color: these envelopes cater to different occasions and personal preferences, adding a touch of charm to your correspondence|Double adhesive paper: made with paper, these envelopes ensure durability and sturdiness, keeping your contents secure and intact|Paper material: crafted from paper, these envelopes offer a comfortable feel and are resistant to tearing, ensuring longevity|Large capacity: each set providing ample space for storing coins, small items, and more, making them highly practical|Multifunctional use: these envelopes are versatile, suitable for storing not only coins but also small presents, business cards, and other small items, enhancing their utility|