Premium quality Swim Stim Pro-Expanders are designed to be pumped or left to soak in water, to create the perfect sinking soft hook or feed pelletThe same unique Koi technology promotes an aggressive feed response, setting them apart from other pellets on the marketSpongy, robust texture ensures they remain firm once soaked/pumpedAvailable in micro 2mm/4mm/6mm in Amino Original and 4mm/6mm for both Betaine Green and Red KrillSupplied in 350g re-sealable bags