Browse all 40 oz. Surfboard Reviews completed by the global Boardcave community. Gather unique surfboard model insights and feedback, while learning more about the Chemistry Surfboards 40 oz.. Watch and read 40 oz. reviews from surfers with the same rider profile as you, filter results to a similar, weight, ability, fitness and volume to help you compare and buy your next board. Our unbiased reviews are used by shapers, surfers and the global surfing community to learn, advance and refine all round surfboard design.