Michelle P.
The Voyager provides maximum flexibility
I have taken the Voyager on multiple international trips over the last 2 years & love how it protects my Zepbound, first the pens & now vials. These included Southeast Asia, Spain, Egypt, & Antarctica, with long overnight flights, cruise ships, & land travel. The flexibility of USB powered refrigeration with a battery pack or direct power or the long lasting freezer pack made this a complete solution. The sling carrier makes going through airport security even easier, but I upgraded it to an insulated water bottle carrier that has a zip pocket for the battery plus card storage & a more comfortable crossbody strap, plus it's more useful for excursions when I leave the Voyager plugged in at my room. I'm now considering backup options in case any of the components fail. I like that they are individually available.