PVC MATERIALS - Water resistant / oil / liquid resistant and can withstand heavy objects. And they are semi-transparent. you can see the articles inside. easy and practical to use.WALLET WITH CLEAR CLOSURE - Nylon band for hanging. Large practical storage space. can store all documents. papers. toys. and other learning accessories. office supplies. also for travel. Organize phones. cosmetics. passports. badges and more.VISIBILITY - Thanks to its Semi-transparent component. so you can easily find and display the items you need. Such as learning cards. small items. cosmetics. pencils. small tools. etc.STURDY AND EASY TO HANDLE - The four corners of the backrest bags are well designed. so they won't scratch the lining of your bags or fingers.30PCS A5 ENVELOPE 23.5 * 17cm. Ideal for classification. storage and presentation. office. industry. home and school.