These markers have the absolute worst smell ever. I could smell them through the Amazon shipping box before I even opened them. They are so strong, and I am not sensitive to strong smells usually. Think of if you took a bunch of permanent markers and dry erase markers, put them together and BOOM-the strong smell!!!! What is worse is that I cannot return them. This is ridiculous. I am not sure if the people who gave these markers 5 stars received good ones or what, but these are definitely not markers that anyone in my household has been able to use. I DO NOT RECOMMEND THESE AT ALL. Spend the extra money and get ones better than these.
******UPDATED REVIEW 11/12/18:
I am updating this review due to the outstanding customer service that I received from Ohuhu. I reached out to Ohuhu's email address and received a response within less than 24 hours and a credit to Amazon (via gift card) within 3 business days. Ohuhu had advised me to just keep the product regardless. I will not be keeping the produce due to the smell but I did have to change this from a 1-star review to a 4-star review due to their response and service timeliness. They really do stand by their products and their service. Though these markers did not work out for me, I hope that others do not have the same product experience as I did. If for some reason you do, take the time to reach out to their customer service department to see if a resolution can be reached.