Bak-Pak™ Ultra Backboard without Pins, 72in x 16in x 3/4in, YellowThe BAK PAK Ultra long spine immobilization board has all of the design features as the BAK PAK, but is thinner and lighter. Weighing in at only 10lb. The board is just 0. 75in thick and load tested to 1400lb. The BAK PAK ULTRA board works well with adults and pediatric patients, does the job in rough terrain and water, and provides needed rescuer features without sacrificing patient comfort. It is the board of choice for the U. S. Military. Ultra