Believe it or not, it's true that most moms seldom be aware of right way to wash and take good of the toddler nap mats. It very common that you see these moms who just toss their nap mats to the washing machine, together with tons of other toddler's clothes, sprinkle it using the strongest powder, then tumble dry set to high. Best of luck to that. Should you choose this always, your mats with have lumps of these pillow fibers making it a little bit uncomfortable for the child to sleep. And if you continue doing so, you'll shorten the life of the toddler mat.
We recently just purchased a Toddler Mat in my four year old, it actually was bought online, and my son specifically wanted the Cowboy Nap Mat by Wildkin and that he was a lot more than thrilled when he got the package. I had to buy a new one because my son doesn't desire to use her older sister's pink strawberry designed nap mat. Anyhow, he proudly carried his cowboy mat by Wildkin to college, ever since they were asked bring someone to use for nap time. I saw his little eyes illuminate with joy and pride because he showed it off to his classmates.
If you're asking the way i made my older daughter's mat last for 9 years, the answer is simple. You just have to know the proper way to wash it. Washing you mat is a very important procedure that will determine its life time. Of course, the kind of material it's made of, would matter as well. But, if you do not understand how to look after it the proper way, a nap mat made from high quality materials would last shorter than those cheap nap mats but taken cared of properly.
In case your mat is machine washable, be sure you wash it together with soft sheets to avoid anything getting snagged in the mat fabric. Ensure your detergent is just mild and never so harsh on colors as well. It is best if you use cool water and wash it in low setting. You could also tumble it dry in low, but when you ask me, air drying is best. Drying it in high settings will make your mat fibers form in small lumps, which are not really good for napping. I usually air dry my toddler mats, try not to place it underneath the heat from the sun, if you are inside a sunny climate. Don't forget to use fabric conditioner as well, to help keep the colors intact. With proper care, your mats will last as long as you desire to use, and you never know, your grand children may still have the ability to utilize it!