Speedo Tri-Clops Backpack
The draw: Expandable bottom, water bottle storage
At 35 liters, the Tri-Clops isn’t much bigger than a normal backpack, but has an expandable bottom wetsuit area that connects to the main compartment if you want to make the bag bigger. (Speedo also offers a 50-liter version for $120 if you find yourself needing more space for race gear.) Two simple details that make life easier: The waistband has two handy zippered pockets so you can access your keys, phone or wallet easily while wearing the pack, and there are four outside pockets that fit water bottles.