I have been practicing karate for over 20 years and am offering items that I have actually used and found effective in my own training. Please make use of them. ○ Size: Length 20cm, Width 10cm, Weight approx. 450g #Fist Training This product is: Portable, allowing you to train anytime, anywhere. You can also use it by wrapping it around a pillar with rubber bands, etc., allowing for various arrangements. Sand penetrates even between the knuckles, allowing you to thoroughly train even between the joints. It's hard enough to train the palm heel, back of the hand (reverse punch), and knife hand, not only the bones but also the thickness of the flesh. You don't have to worry about sand or straw from makiwara scattering during training, so you can do it indoors without concern. This is a handmade product, so it is always new and unused, but please understand that there may be some cosmetic imperfections in the materials. If you have any questions, please ask in the comments. The product will be shipped in the condition shown in the fifth photo. ⚪︎ If you would like to purchase a set, please let me know. ※ This is an original product. It is only sold on Mercari. I have found it being listed on other sites without permission. Please be aware that those are scam sites.