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We love the look and Lego-like versatility of KitBrix, a modular system of bags designed to tote your training gear. Each KitBrix rectangular cube measures 39 x 24 x 24 cm and can be used individually or zipped together and configured with shoulder or backpack-style straps. Designate one for swim, one for bike and one for run (easily identified by graphic icons) and take only what you need to each session. Of military-inspired British origin, KitBrix will be available in the U.S. in early 2015.
($80 per unit, Kitbrix.com)