Fly High Pro X Series V-Drive Sacs - 42"x16"x16" - 400 lbs. Each - Fly High Pro X Series V-Drive Sacs were designed to fit perfectly in the rear compartments of most V-Drive boats. These sacs are the most demanded on the market for their durability and ease of use. Combined with the weight of the engine in the back of the boat, these sacs will produce monster wakes. Priced per pair!