It has a flat body. Designed to imitate Bluegill. The thicker rear part of the tail kicks and moves a lot of water and attracts fish, Upper and lower asymmetric body The lower part has a higher saline density than the upper part. Provides stability when retrieving it through the surface of the water.It has a slot on the upper side of the body for perfect positioning of the hook and better ferrata. The best coupling is with an offset hook no. 4 ／ 0. 【S ・ A ・ Ｆ Material】 SAF material is an original Geecrack material for worms, which appeals to the senses of taste and smell that a fish uses in its search for food. SAF = Salt + Amino acid + Flavor ＊ The SAF material is used in the realization of SPIRON TWIN.