Traveling with your triathlon gear is already a hectic, worrisome experience without having to worry about the vessel that's holding it. That's why TYR constructed the Rucksack from a durable Ripstop nylon with a 70D polyurethane coating. As a result, the bag was made to resist the wear-and-tear that accompanies traveling with your gear. For storage, the Rucksack features a 20. 5 x 12 x 9 inch dimension with front, lid, and side compartments/pockets to house all of your gear. More impressively, though, the Rucksack is quite easily transformed from a backpack to a briefcase of sorts. With a few folds and a couple of rolls, the Rucksack is easily transformed into a size that's more suitable for air travel, or for any transport that's short on space. The TYR Rucksack is available in one size and in the colors Black/grey and Black/red.