The bristles are made of silicone reinforced softness grade. They are soft as regular soft toothbrush. It is designed to not hurt your gums and teeth and avoid sensitivity.
Sonic Brush 30 days warranty will cover all of the internal issues with our device, damaged device received from the delivery date. If the product is broken because of misuse it cannot be eligible for the replacement.
Yes. We can always look up your account in the system if you provide us full name on the order placed with our store. You can always find your order number from the email confirmation received from hello@trysonicbrush.com