<Ul> <Li> 1969--1972 - Velcro brand fasteners were used on the suits, sample collection bags, and lunar vehicles during all Apollo program missions to the Moon . </Li> <Li> 1984 - David Letterman wears a suit made of hook - and - loop and jumps from a trampoline into a wall covered in the product during an interview with Velcro Companies' USA director of industrial sales . </Li> <Li> 1996 - In the John Frankenheimer film The Island of Dr. Moreau, Moreau's assistant jokingly claims that the doctor won his Nobel Prize for inventing Velcro . </Li> <Li> 1997 - The fastener has become part of a recurring joke in various media in which it is claimed that modern humans would be unable to invent it, and that it is in fact a form of advanced technology . For example, K claims in Men in Black that Velcro was originally alien technology, </Li> <Li> 2002 - The Star Trek: Enterprise episode "Carbon Creek" portrays Velcro as being introduced to human society by Vulcans in 1957 . One of the Vulcans in the episode is named "Mestral", after the fastener's actual inventor and founder of the brand . </Li> <Li> 2004 - One of the characters in the film Garden State made a vast fortune from inventing "silent Velcro". </Li> <Li> 2016 - As an April Fool's Day joke Lexus introduced "Variable Load Coupling Rear Orientation (V - LCRO)" seats, technology that attaches the driver to the seat with Velcro Brand product to allow for more aggressive turns . </Li> </Ul> <Li> 1969--1972 - Velcro brand fasteners were used on the suits, sample collection bags, and lunar vehicles during all Apollo program missions to the Moon . </Li> <Li> 1984 - David Letterman wears a suit made of hook - and - loop and jumps from a trampoline into a wall covered in the product during an interview with Velcro Companies' USA director of industrial sales . </Li> <Li> 1996 - In the John Frankenheimer film The Island of Dr. Moreau, Moreau's assistant jokingly claims that the doctor won his Nobel Prize for inventing Velcro . </Li>

Which is hook and which is loop in velcro