Material : 80% rice husk fiber, 20% lignin starchSize (L) : Ear : 23 x 12.9 x 3.3cmFace : 22 x 17.6 x 3.3cmWeight : 462g Size (S) : Ear : 18.8 x 10.6 x 3.2cmFace : 17.9 x 14.4 x 3.2cmWeight : 331g