This is the latest circuit-use spine protector from Knox, a British protection manufacturer that was the first in the industry to release a CE-certified spine protector. It can be worn under a racing suit, of course, but also under a jacket for touring. It can also be used as a multi-activity back protector for skiing, snowboarding, mountain biking, etc... It features adjustable straps and side belts for a custom fit. There is a removable kidney (pancreas) protector under the side belts. The removable mesh liner on the inside of the back is washable. It has passed temperature tests from +40°C to -20°C. This item is not sold in Japan, so I purchased it from the official website in the UK. The main body price was €130, which is about ¥24,000, and with customs and shipping, it cost about ¥35,000. I have no history of falls. I am 175cm tall, and it covers down to my sacrum. For your reference. Total length: 475mm CE level 2 Made in China