It easily fits in a suitecase
Purchased the lockbox for summer travel, have used twice. It fits easily in suitcase, passes through TSA without a problem, holds set of keys, a Note 3 & Droid phone, and a men and women's wallet. Tight fit but it does hold it all. Wish it was just a little larger to fit a Kindle. Having the keyless lock is fantastic as I am not one to carry a corded key if I don't absolutely have to. The strap has plenty of length so you are not limited by what you lock it around. Highly recommend for the peace of mind safety factor.