Made in Japan Mouthguard for Kendo Suitable for use with men (face guards) for youth and young children (13-bar and 12-bar face guards). Can also be used with men for Naginata, etc. The thickness is 1mm, providing a sturdy construction. The material used is polycarbonate, which is resistant to impact and breakage. After various tests and monitoring, thinner mouthguards of 0.5mm or 0.3mm tend to come off the face guard due to the impact of strikes, or are more likely to break during removal (thickness is important; please check the thickness when purchasing). This product was created after determining that 1mm thick polycarbonate is the most suitable material for mouthguards. Please remove the blue vinyl before use. For multiple purchases: From the second item onwards, the price is 400 yen per piece when purchased simultaneously. We have plenty of stock, so immediate purchase is welcome. Shipping will be via standard mail, so it will take approximately 3-5 days for delivery. Furthermore, standard mail does not deliver on weekends and holidays, so delivery will be further delayed if weekends or holidays are involved. Thank you for your understanding. If you prefer faster delivery, we can change the shipping method for an additional fee, so please comment before purchasing. No discounts are available.