1.This product is only suitable for people with high arches to elevate the instep, not to widen it.
2.It is not recommended to use on boots with too high boot shaft.
3. We provide you with support accessories to fill the heel gap, please use it correctly according to the video method.
4.Please take the initiative to contact Zvearhnt after-sales team if you have any questions, we will solve all your problems for you.