3M Precise Mouse Pad with Repositionable Adhesive Backing, Battery Saving Design, 8.5 x 7 Inch (MP200PS) Precise surface enhances the precision of optical mice at fast speeds Battery saving design extends battery life of wireless mice up to 50% Ultra-Thin, portable mouse pad with 3m repositionable adhesive stows conveniently on back of notebook computers 7 in x 8.5 In These products draw less current than darker moussing surfaces, which results in extended battery life