The Doctor’s NightGuard Advanced Comfort Dental Protector for Teeth Grinding – Link 

Amazon has this marked down to to it’s lowest price at $10.70. Checkout via Subscribe & Save for a final total of

• Designed by a dentist for protection & comfort
• Custom fit by you for your convenience
• Patented 2 layer design: Soft Upper Layer to cushion & absorb, Firm Lower Layer prevents grinding & bite through
• Storage case included