Let me start by saying, these Saintrygo art portfolio bags are a game-changer for anyone who needs to organize artwork, posters, or teaching materials. I've been using them for my art classes, and they've made my life so much easier!

The large 19x25 inch bags are perfect for storing multiple posters or large artwork. The handles are surprisingly sturdy - I was able to carry several filled bags at once without any issues. The zipper closure gives me peace of mind knowing my students' projects won't fall out.

What really impressed me was the waterproof PVC material. During a recent rainy day, some water splashed on my bag while transporting student paintings home, and everything inside stayed completely dry. The mesh design is brilliant too - I can quickly identify contents without opening each bag.

The included A4 pencil cases have become my go-to for organizing smaller supplies. They're perfect for markers, erasers, or even as pencil cases for my students. I love that the set comes with five of each size - enough to categorize different projects or share with colleagues.

My only minor complaint? When completely full with thick posters, the larger bags can be slightly difficult to zip closed. But considering how much they hold and their affordable price point, this is a very small trade-off.

Whether you're an art teacher like me, a student needing portfolio storage, or just someone who wants to organize documents creatively, these bags deliver exceptional value. After three months of heavy use in my classroom, they still look and function like new - definitely worth every penny!