Designed from top to bottom with the best materials, the Daiwa D-VEC Boat Bags are perfect storage vessels for whatever your heart may desire when spending the day on the boat. Externally, these bags are constructed from an incredibly durable marine grade vinyl that is completely waterproof. The double-zippered top is further protected by a storm flap to ensure there is never unwanted water intrusion. The bottom is constructed from a thick non-slip EVA padding to protect more delicate items like smartphones or cameras and ensures the bag won't slip and slide on wet boat decks.