White yarn - 100% white Caucasian dog underfur with addition of matched in colour white sheep wool; Grey yarn - 100% Caucasian dog underfur; Red yarn - 100% Collie underfur; The heel is knitted by double-ribbing for more strengthening. Underfur is spinned with sewing reinforced thread and rubbered into 2 threads.
The work doesn't have any signs of dog wool smell, as it has two stages of washing: firstly the yarn itself is washed, then the finished work goes washing. I don't use cutted wool, only underfur.