Not glue with adhesive, not easy to break. Can according to your request to make many different shapes. Top skin:XPECore:EPSBottom: HDPETwo stringers inside to strengthen the boardSix XPE surface colors to choose: blue, dark blue, red, yellow, white, pink.size: 6':182 x 51 x 6cm 7':213 x 52 x 7cm 8':244 x 55 x 7.5cm 9':274 x 55 x 8cmSoft Surfboard: this type of surfboard,we use hot-welding ...