Put this backrest on your kayak and let your back take a break on a long-distance boat trip.Simply attach the wallet to the kayaking connection point to easily install the backrest.Once installed,adjust the belt to fit snugly.Comfort enhancer for long-term use. Package Weight:268 g/9.4 oz Scope of application;kayaking,inflatable boats,fishing boats,drifting boats. Material;EVA composite compression molding,the surface material is made of knitted fabric,more feel,novel style,characteristics,waterproof,heat-resistant,wear-resistant,corrosion-resistant,high-elastic high-elastic EVA inside,sit up for more comfort. Installation ;use the four plastic buckles on the backrest to respectively buckle the hull shackles on both sides of the kayaking seat,and adjust the length of the ties to make the backrest erect and tighten to achieve the effect of supporting the waist. Colour:Black Material:EVA + knitted fabric Size:24 * 53cm Package Contents: 1 x kayak back cushion Only the above package content, other products are not included. Note: Light 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.