What are the size of the lockers? October 18, 2024 19:52 Updated Mad River offers two locker sizes in our rental facility. Large = 17"x12.5"x18"; Small = 13.5"x9.5"x18" Related articles What are the tubing discounts? How fast do the tubes go down the hill? Are your activities good for kids and adults? What is the inner circumference of the tube? Do you offer luggage storage?