When your shoes get wet the water inside them starts to expand.
Can you wash neoprene in the washing machine. You will not be able to use standard washing powder as this is too harsh for neoprene. Hand washing is the best method to clean your neoprene material but if you need to use your washing machine use the delicate cycle and keep the temperature of the water on cold. A front-loader with no agitator might be better than a top-loader but Id still avoid the washing machine.
Always check the labels before doing anything or check with the point persons in the doggy stores if the toys you picked are suitable for washing machine use. There are many household items that you can throw in the washer instead of cleaning them by hand. But if your area rug is made of wool silk or other delicate fabric machine washing can cause problems.
Do NOT put the bag in the dryer as neoprene. Based in the Hawaiian islands the folks there recommend that you wash your covers right in placetheyre waterproof after all. Steps to Clean Your Neoprene Seat Covers.
Hats do come in a lot of different shapes and a variety of fabrics. Manufacturer Wet Okole was the first to make neoprene covers. You can use a wet suit wash or soap for your neoprene shoes.
If the neoprene is especially dirty or grimy you may want to soak it overnight. Hand washing of other neoprene products is also recommended. From these varieties some you can wash in the washing machine and for some you will have to go a different way.
Use harsh detergents bleach or other strong chemicals as these can cause damage. Dont put anything else in with the wetsuit that could damage it whilst the machine is spinning. A specialist wetsuit cleaner or a gentler laundry liquid.