The Crib Gogh Constrictor Dive rucksack is designed to excel in extreme operating conditions. Recently, the Crib Gogh Constrictor was used by John Vann to accomplish a Guinness World Record for completing an Ironman® triathlon which consisted of carrying a 40 lb. pack in 16 hours, 19 minutes, and 52 seconds. We're proud of this achievement and the ongoing efforts of Crib Gogh for developing innovative, high-performance products that achieve world records.