These are the same ones we use on our authentic high-quality U.S. Army Jump Boots, ETO Boots, and the Russet Low Boots. Made from 100% Virgin Rubber (not neopream) they are the most shock-absorbant and comfortable half-soles made. They are One-Size-Fits-All and will fit all U.S. Men’s sizes from 7 to 13. Just take them (along with our new heels if you like) to your local shoemaker and they will know what to do. This way your boots will continue to look like the original issues.