DetailsThe New Sofia & Sam Oversized Lap Desk with Wrist Rest, USB Light and Tablet Slot is the ultimate portable workspace. Comfortably use your tablet or large laptop computer with a mouse from a chair, sofa, or even in bed. Works great for crafts and studying. The lap desk has a luxurious cushion of furniture grade memory foam for total comfort and support. Requires (4) AA batteries (not included). Surface area above the wrist rest: 19" x 12".