The Korda Pop Up Boilie IB Yellow is a floating artificial boilie for carp anglers looking for a highly visible, durable, and crayfish-resistant hookbait. The IB Yellow version has a washed-out yellow color and a fruity flavor incorporated into the plastic. Thanks to the recessed cut-out, the Korda Hair Stop sits neatly inside the boilie, keeping the presentation tidy and making it harder for crayfish or waterbirds to grip the stopper. The pop-up buoyancy is designed for use with Spinner Rigs, with the 12mm version well suited to size 6 hooks and the 14mm version to size 4 hooks.