Material: This storage bag is made of mesh hemming, which is very strong and durable. Size: There are 2 sizes of storage bags. Great for general storage. Provide you with more storage space to meet your various storage needs. Easy to store: The material is brittle and does not deform, even without storing or filling. Space saving, ideal for small spaces such as home, college dorms, bedrooms, basements, attics, etc. Size description: The number indicates how many storage compartments are included.