We can't stress enough how great this marketing tool is for your brand! These pick 4 (TM) totally custom stress test calendars measures 4" x 7" and has 20 mil. thickness. This non-toxic USA made white flexible magnet with square corners has a stress test indicator attached to the magnet. While many promotions expire, calendars remain year-round! Great for home or office and perfect for any end use group. Add your logo to maximize brand exposure!