Thank you for viewing! ('◇')ゞ This product is popular, so price reduction is not possible. This is a set of 3 pairs (6 pieces total) of upper and lower mouthpieces. There are no instructions, so please refer to the following 【How to Use】. 【How to Use】 1. Warm the mouthpiece in 80°C (176°F) water for 5 seconds. 2. Take it out of the water and let it cool for 10 seconds. 3. Press it firmly against your teeth to create a mold. 4. Trim off the excess with scissors to shape it. ※ We are not responsible for burns or other injuries resulting from improper use. Please use at your own risk. ■Notes■ Due to postal law revisions, Saturday, Sunday, and holiday deliveries have been eliminated, and delivery times have become slower. If you have not received your order after one week from the shipping date, please contact us again. 736 Sachi 15 New