CRYSTAL CLEAR PLASTIC SHEET - PET is a plastic resin and a form of polyester; Its shatterproof properties makes it perfect to protect your pictures and prints against moisture and dust | THIN & FLEXIBLE - Unlike rigid acrylic or Plexiglass, PET is flexible and non-weight bearing: It can be scored and snapped apart; Easy to write on with dry-erase markers, and leaves no residue after wiping off | PERFECT PROJECT PALETTE - Use for wedding signs, arts & crafts projects, hygiene barriers, and more; Can be used with markers, alcohol inks, glitter, watercolors, acrylic & oil paints; Make your own stencils for students | INCLUDES - 2 pieces of 11 x 14 Inches (27.9 x 35.5 cm) - 0.03" (0.8mm) thickness; PET flexible plastic sheets are shipped with removable, protective blue film on both sides | TRUSTED AMERICAN COMPANY - All of our materials are certified; We never mix in impure materials