Since shoe sizes can vary across brands and style we cannot make an exact perfect recommendation on comparing them against other brands and shoes. However, when we tested them with our team we found that most ran "true to size" as compared to our I/O Trainers which run big and the outliers were those that stated they had to up half a size.
For reference, if you happen to have a pair of MACV-1s, the same size should work with our Ballistic Trainers. OR, if you normally wear a pair of any major shoe brand in a particular size, the same size will work best in our Ballistics.
However, with our I/Os you will want to go a half size down as those do run big.
If possible, we do suggest you order two different sizes to compare if you are unsure and send the pair that does not fit.
Returns that are unworn and in their original condition can be returned within 30 days of the delivery date for a full refund (minus shipping). So we recommend testing them out inside on carpet or a place where they will not be damaged or show any wear or tear.
See our full return policy here:Returns