Envelopes descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Pink Poly Mailer, Self Adhesive Post Package, Glue Seal Postal Bag, Courier. Feature: 1. QUALITY-The Go shlpping or Bags Are Crafted with 100% Virgin Polyethylene Which is Incredibly Durable and Strong on the Outside with Tough Protective Black Inner Linings Inside.The Self-seal Adhesive is Super Strong and It Doesn't Come Apart Unless You Tear It Up. 2.PATENT DESIGN-Each Go shlpping or Bag Comes Complete with a Self-seal Strip That Allows You to Easily Remove Without Generating Any Static Electricty,ensuring It Won't Stick to Your Hands or the Bag Itself.The Strong Adhesive Will Stick with Ease Even if They Are Stored and Unused for As Long As 1 Year. 3.ULTRA SECURE-The Self-seal Strips for Easy Packing Provide a High Strength,durable Closure,making It Water and Tear Resistance.Thanks to the Pure Black or Grey Inner Lining,the Privacy of the Items Inside is Guaranteed. 4.VERSATILE USE-The 4x6inch,5x7inch and 6x9inch Go shlpping or Bags Are Perfect for Phone Case,jewelry or Other Small Items. The 10x13inch Go shlpping or Bags Are Perfect for Everything Soft,such Like Clothes,T-shirt,Blankets,Scarves,Apparel and Other Non-fragile Items.(Kindly Contact Us if You Dont Know Which Size is Suitable to Pack for Your Products~We Can Advice You Size.) Specifications: Flap: 40mm/1.57inch Material: Plastic . Products number : SOMONO75461