Sentimental Me memorabilia storage boxes are lightweight, durable, strong and well-constructed. The body of the boxes are made out of 200 # E-Flute corrugated paperboard. Except for the Plain White memorabilia storage boxes, the boxes are wrapped in beautiful artwork and designs displayed on 80 lb. basis weight labels that have a poly lam coating to protect the labels from brief moisture and to make them more durable. Please note that the boxes are not waterproof or fireproof. Each box contains seventeen (17) compartments to organize your keepsakes in an orderly and easily accessible manner. The exterior dimensions of the assembled box are 14 1/2” L x 12 5/8” W x 13” H.