Quality Park Thank You Poly Mailers are the perfect mailing envelopes to set your packages apart. Our "Leaf" printed shipping envelopes are made of durable opaque material thats waterproof and tear and puncture-resistant to protect contents from spills and weather. Ultra lightweight unpadded poly envelopes are ideal for shipping non-fragile items like clothing and accessories to keep contents safe and your mailing costs low. Our Redi-strip self seal closure has strong adhesive to give you a powerful, permanent seal on these large shipping bags — just pull the paper strip and press! Stock up on these cute poly mailers for gift season! These fun leaf-printed thank you envelopes set your mailings apart in any mail stack and deliver your excellent customer service right to their doorstep. Vibrant polymailers make a great first impression that keeps customers looking forward to your next package! Keep your essential small business shipping supplies on hand and stock up on these 10 x13 inch poly mailing bags. In boxes of 100 pcs.