While it’s easier to carry around these 2 sets of these bowflex selecttech dumbbells than carrying 15 sets of regular dumbbells, these still weigh 52 pounds (24 kg) each, so better be most of the time left in one place.
Except for some models of water-filled dumbbells that we can’t recommend, there is yet any type of dumbbells that you could conveniently carry around with you while traveling around the world.
For working out on the go you might want to have a look at some alternatives like working out with trx like suspension trainers, or workout bands.
You can also engage in workout programs via mobile apps and videos on youtube.
My favorite workout guru is the one and only Jillian Michaels. Who is also known for her appearance on the NBC show The Biggest Loser and for a good reason got the impressive IMDB rating of 8.7 for her 30-day Shred workout program and others.
Most of Jillian Michaels’ classes have been recently removed from youtube for an unknown reason, but you still might find some of her videos online in sites like dailymotion.