When use, you only need to put the plug on the drainage holes on the canoe, and gently to fix it in place. When drainage or cleaning is needed, it can also be easily pulled out. The plug is made of high EVA. It has strong flexibility and toughness. Good water resistance can effectively prevent water from entering the hull. It helps you to keep it dry and - and when paddling. River -row drainage holes are mainly used to block the ribbon drainage holes, prevent water penetration, and keep it dry when paddling Light and portable, comes with a rope, easy to install and disassemble, use it easy and simple, with a cushion at the bottom, so that the rope not fall off and use it with confidence. Color: Black Material: EVA Size:L Package Contents: 4 x Kayak Scupper Plugs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.