Given the nature of triathlon, it's likely that your training will take you from wet to dry quite often. Accordingly, TYR developed its Utility WetDry Bag in order to safely transport your gear. The bag is small enough to fit inside of your typical equipment bag, but large enough to carry the essentials like shoes, caps, goggles, or even a towel. To use it, place your wet or dry gear inside the bag, roll the top strip down three times, and buckle it closed. Easy as that. And to simplify the bag's transport, the buckle creates an ample sized handle should you wish to simply carry it alone. However, it is worth noting that although the Utility bag is constructed from a waterproof fabric and features bonded seams, TYR does recommend 'double bagging' your electronic devices for an extra touch of security. The TYR Utility WetDry Bag is available in a size Large 4L that comes in the color Black, and a size Small 1L that comes in the color Red.