Sea to Summit Lightweight Dry Bag Set, 3L Blue, 5L Yellow, 8L Orange, Blue/Yellow/Orange, A4010

It's flexible in both senses of the word- soft and pliable and ideal for many different uses. It's made from a bluesign approved recycled 70D nylon with a C0 non-PFC DWR finish. The interior polyurethane coating is white to improve visibility and make it easy to find small items in poor light.