I appreciate the Iona packing cubes for their quality, natural materials of cotton and leather. Like other Frost River gear you get supple yet resilient waxed cotton canvas that breathes, feels soft and repels moisture. The two-way YKK zippers add a nice touch. These really do pack into cube like forms more so than other flattening-type of luggage organizers. Perhaps a little narrow for larger cuts of attire, they still hold a stack of folded clothing or whatever else with compact ease. I ordered a medium and a small to start, and could probably fit another into my Overland Valise but that extra space fills nicely with the large accessory bags Frost River makes. It feels good packing a bag with such quality construction right down to its organizational components, all cut from a similar cloth and made with the same care and devotion to craft as we’ve come to expect from all of Frost River’s goods. These Iona cubes are a real winner.