Weve bought three of this type of foldable bag from Biaggi, one of which is about 10yrs old now.  We always toss one in our luggage before traveling and theyve come in SO useful.  Its been a shopping bag for groceries, overnight bag so we could leave our big hard side luggage at the hotel, makeshift purse when I broke the strap on mine, beach bag and the extra tote we needed when I bought too many souvenirs.  It zips up into itself so easy, unlike some others. Definitely for anyone who travels.