The Ventral Adjustment System only fits with the POC Ventral SPIN helmet. The SPIN pads photographed in this image do not come with the adjustment system, but are sold seperately. Note: This item should only be used in the product it is intended for. POC accepts no responsibility for problems or injury as a result of wrongly fitted parts or if this part is used in another model. For the safety of our riders, we always recommend replacing your helmet every 1-5 years dependent on use, and especially if your helmet was involved in a crash.