Excellent pad for use in engineering classes and labs. Smooth, green 15 lb writing paper has printed outline box on top of sheet and has 5 square/inch grid layout printed on back of sheet. Back grid shows through to front as dimensional guide for drawings and layouts. Sturdy chipboard back adds stability. Glued along 8.5″ (top) edge and 3-hole punched to fit in standard binders. Sheet size is 8.5″ x 11″ and each polywrapped pad has 100 sheets. Proudly made in USA!