Northcore C-Mat - Surfers Changing Mat: The C-Mat changing wetsuit mat is the simplest ideas are often the best and this certainly applies to sports changing mats. This super tough, waterproof bag folds out into a flat 1m diameter circle for standing on to whilst getting changed. It's perfect for use in car parks when getting out of wetsuits. Just throw all the wet gear into the bag, pull up the drawstrings and it's packed neatly away. The material is fully waterproof and very heavy duty so can be washed down and wont leak if a wetsuit is left inside it. Plus there's also a handy tarpee pocket for storing wax!