Lateral access to my gear was a phenomenal convenience on my recent 15-day river trip in the Arctic. The biggest concern anyone has regarding the functionality of a dry bag is “does it keep my gear dry?”. In short, yes. Granted, I never tipped my boat to have it mauled by massive rapids as a potential test. But everything I put in those bags for days on the river stayed totally dry – guarding against full over-the-bow waves and a few squalls of rain.