Boom FusionThe new Fusion Boom for our Unit SS25 features a pistol grip and is built with an oval carbon construction to keep the weight low while ensuring ergonomic handling. The redesigned flush connection to the strut delivers a seamless feel and prevents any risk of your hands getting caught. Available in three sizes: Size S (72 cm) for wing size 2. 0, Size M (84 cm) for wing sizes 2. 5 to 3. 0, and Size L (96 cm) for wing sizes 3. 5 to 6. 5.