These Harmony Kayak Cartop Carrier Blocks are replacement blocks for the Harmony Kayak Cartop Carrier Kit. Two contour cut minicell foam blocks cradle your kayak on the crossbars, while the non-slip, non-stick finish on the base of the blocks provides added security and protection to your vehicle's finish.
The blocks are well made and fit well; however, way too pricey. On the review, the one star lost is to price.
Takes a little effort to slide onto rack but they fit rack well. Not much engineering into making this. Could be less $$ as most $25-$30 block pairs on the market include straps, these do not. Price set for the name. Have had a small corner of the foam tear off from putting kayak on and off after a few trips. Durability? Its just foam, lots on market to choose from. Hope ACK carries other brands in the future.