For safe, quick and accurate measurements. Great for taking pictures on the ground or in the boat. Roll up design for compact storage. Velcro details to prevent it from sliding around in the boat. Wet the mat before measuring your dreamfish to protect the fish mucus. * Small: 10 x 120cm * Large: 25 x 140cm * Unit: Cm * Strong and durable PVC mat with acrylic head * Roll up for compact storage * Delivered in mesh pouch