When I first started BJJ training I would always wash my gi in cold water and hang dry as advised by the gi company to minimize shrinking. Now after many years of training I no longer follow this suggestion. I find washing in hot water and using the heat dryer makes my gi cleaner, smell and feel better too. To account for the shrinkage, I started to get 1/2 size larger if they have that option (Flow Kimonos has a 1/2 size variations) or a full size larger (order an A4 instead of A3). I don’t want a gi that is too tight and restricts movement and this allows me to account for shrinkage when I wash in hot water and dry in the dryer. Below are my before and after measurements after 4 weeks of training and washing in hot water and tumble drying with heat in the dryer. **Reminder – if you want to minimize shrinking then continue with the cold wash and hang dry. This is just what works for me.