palm upright barsExperience effortless kayak transportation with Palm's padded Upright Bars. Upright Bars are designed to stabilize kayaks sideways during transportation on a car roof, making it easier to transport multiple kayaks at once. Often used in combination with foam blocks, these upright bars simplify the process of kayak transportation. To ensure a secure lock, your roof bar thickness should not exceed 28 mm. This will provide the optimal fit for the nuts.