For transporting bulky loads in wet places. For rafting, travel, base camp, sailing and expedition use. These heavyweight ‘TrailProof' vinyl waterproof duffel bags are designed to be a simple and affordable option for outdoor sports.They are made from tough 500D vinyl to withstand all the knocks that you experience on the trail. Four compression straps help to make a great waterproof seal and the bright color means you can easily spot your gear amongst everyone else’s, and it reduces how hot they’ll get if left out in the sun.