Fast shipping. The ear tips arrived in ten days. I normally use large ear tips, but this one is very rigid, maybe a medium sized would fit better. Be prepared because this tips is not like anything (and maybe buy a smaller size than you normally use).
Shipping was fast. Tips give nice seal. There is some irritation in my ear canals after extended use. But so do normal foam tips in my ears. I like to get close to same seal as normal foams but also when sweating during sports the tips won't start slipping like normal foam tips would. Also blon-03 stays in the ear safely.