This is a great option for the beach. Can easily hold 3 iphones. Not only is it good for keeping your items secure we like it because we can attach to our beach chair and it keeps our phones close to us and high above the water so everything stays dry.This is a great lock box for any park your traveling to! Just find the nearest table, strap it in, and avoid $20 or more in fees for the day in lockers for your valuables.Once I changed the code, this little lock box made me feel very safe! I will be taking this to the Dominican with me.Worked perfectly on my cruise while at the beach to hold valuables while in the water.Everything ON IT.Bought this to take on vacation to Cancun. Needed something to use at beach.. On a previous trip I had purchased a lockable waterproof bag ~ ended up not working as the lock clasp was plastic and broke on the 1st day of our trip. Surprisingly, this actually has a metal lock and was durable. Held our cellphone, cash, room key.It could of held a little more. Realize, this is not to be used as a substitute for your room safe. But it does help peace of mind at beach. It prevents quick grab/run. We were in and out of this constantly over 10days and the locking mechanism never failed once.The only thing I would change is making the handle/cord a little longer. Being so short makes it a little tight when attaching to beach lounger.We used this for the beach in Cancun and it was so perfect! We attached in the the leg of the chair and felt completely comfortable about leaving it to go in the ocean or to the snack bar.It held money and 2 cell phones. Had more space but we didn’t need it.Definitely buy this!We used this while on a Cruise to Cozumel, Costa Maya and Honduras. At each destination, it was easy to use. We were able to lock this up to the chair and thread it thru 2 backpacks.