CARHARTT WIP Soundscapes Dry Bag Black Yucca I031822. The Soundscapes Dry Bag is made of Duck Canvas, which is a light yet robust polyester fabric. The bag is fully waterproof and features seam-sealed tape details for additional protection from moisture. It fastens with a plastic buckle closure and has an adjustable shoulder strap. One size: 60 x 37.5 cm / 23.6 x 14.7 inch. Capacity: 20 liters Duck Canvas: 100% polyester.