I have a pair of Roeckls and Heritage gloves and as long as you don't use any strong detergents (fabric softener ie.) and air dry them mine have lasted just fine
I put some detergent specifically made for silk, wool, and other kinds of delicate fabric in the water and soak my gloves. After about 30 minutes to an hour, I take them out and rinse them with clean water. I find using that specific detergent doesn't damage the fabric and leather as much compared to normal detergent. I hope this helped!