The belts and all bondage articles are made of stainless steel. The name of the steel is V2A and is used in the food industry so be aware that this is harmless. The advantage of that steel is that it’s not rusting (steel No. 1.4301).
There is another steel, V4A, which is a medical steel. V2A is suitable for people with allergies. If you have thoughts about this please contact us and we will send you a small sample of you steel. You can tape this sample to your body over night and see if you get an allergy.