4-Pack 90L Large Foldable Under Bed Storage Containers, Clear Transparent Top & Secure Lid Dustproof Storage Bins,Grey Breathable Closet Organizers for Clothes, Blankets, Pillows, Shoes

These came folded and are the size I expected. The tops are a clear vinyl-like material. The sides and bottoms are a non-woven fiber embossed fabric. The containers have no frame, no stiffeners. They rely on the contents to resist deformation. I packed a matching heavy cotton queen quilt, twin quilt,crib quilt and one queen knit polyester blanket in one container. The zipper has no protective inner flap and jammed on the blanket before I protected it with my finger while closing. The zipper is self healing which means that a focused stress applied against it will make it self opening. When carried by the side handles, the container could easily be folded part way. Ignoring the exaggerated claims, if used to store bedding under a bed, these should be able to do a good job of keeping them dust free. I tested the fabric for moisture resistance by placing a microwave dried folded paper towel inside the still folded bag on top of the vinyl and zipped it closed. I saturated a paper towel with water and placed it directly above the folder towel inside. After2 hours I removed the wet towel and wiped the fabric gently. The fabric was not darker and the inside towel was not perceptibly moister. That shows the fabric is water repellent and does not wick standing water. It's a good wet barrier, but for the same reason it will trap moisture inside. To avoid mildew or mold, I would pack any fabrics when they have been recently washed and dried while the humidity is low. These are good storage containers, not moving containers.