I purchased the 18L as a set of 3 from gearlabs. The design and look & feel of this bag is excellent. Functionally speaking this has a unique inner bag design which lets you separate truly "dry" items from potentially wet or quick-access items. The nice feature of the 18L is that it is able to hold my day accessories for a kayak session. I clip my PFD and deckpod to the interior clip of the bag after stowing a 3mm farmer john wetsuit, long sleeve sun protection shirt, gopro/camera accessories, paddle float, bilge pump, hydration pack and a towel. This has become my go-to day trip bag.